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12212003212021 = 194791341830921
BaseRepresentation
bin1011000110110101010000…
…0111010000101011110101
31121020110022111112010201001
42301231110013100223311
53100040140310241041
641550041122403301
72400200552411524
oct261552407205365
947213274463631
1012212003212021
1139890994a0938
121452927200531
136a7782729582
143030c7cb64bb
151629e004c131
hexb1b541d0af5

12212003212021 has 8 divisors (see below), whose sum is σ = 12881576851200. Its totient is φ = 11545113235680.

The previous prime is 12212003211953. The next prime is 12212003212033. The reversal of 12212003212021 is 12021230021221.

12212003212021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12212003212021 - 27 = 12212003211893 is a prime.

It is a super-2 number, since 2×122120032120212 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12212003212021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212003210021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670906360 + ... + 670924561.

It is an arithmetic number, because the mean of its divisors is an integer number (1610197106400).

Almost surely, 212212003212021 is an apocalyptic number.

It is an amenable number.

12212003212021 is a deficient number, since it is larger than the sum of its proper divisors (669573639179).

12212003212021 is a wasteful number, since it uses less digits than its factorization.

12212003212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341831419.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12212003212021 its reverse (12021230021221), we get a palindrome (24233233233242).

The spelling of 12212003212021 in words is "twelve trillion, two hundred twelve billion, three million, two hundred twelve thousand, twenty-one".

Divisors: 1 19 479 9101 1341830921 25494787499 642737011159 12212003212021