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12233121213 = 343136169677
BaseRepresentation
bin10110110010010011…
…01001110110111101
31011120112202221112110
423121021221312331
5200023134334323
65341514124233
7612101546265
oct133111516675
934515687473
1012233121213
115208307035
122454a20679
1311cc547681
148409827a5
154b8e6d793
hex2d9269dbd

12233121213 has 16 divisors (see below), whose sum is σ = 16702652736. Its totient is φ = 7959786240.

The previous prime is 12233121181. The next prime is 12233121269. The reversal of 12233121213 is 31212133221.

It is not a de Polignac number, because 12233121213 - 25 = 12233121181 is a prime.

It is a super-2 number, since 2×122331212132 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12233121213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12233121013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140731 + ... + 210407.

It is an arithmetic number, because the mean of its divisors is an integer number (1043915796).

Almost surely, 212233121213 is an apocalyptic number.

It is an amenable number.

12233121213 is a deficient number, since it is larger than the sum of its proper divisors (4469531523).

12233121213 is a wasteful number, since it uses less digits than its factorization.

12233121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71084.

The product of its digits is 432, while the sum is 21.

Adding to 12233121213 its reverse (31212133221), we get a palindrome (43445254434).

The spelling of 12233121213 in words is "twelve billion, two hundred thirty-three million, one hundred twenty-one thousand, two hundred thirteen".

Divisors: 1 3 43 129 1361 4083 58523 69677 175569 209031 2996111 8988333 94830397 284491191 4077707071 12233121213