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12212201121121 = 22354763233727
BaseRepresentation
bin1011000110110101111111…
…1010001110010101100001
31121020110211021220221221201
42301231133322032111201
53100041041441333441
641550112512321201
72400205504540141
oct261553772162541
947213737827851
1012212201121121
113989190185981
121452981543201
136a77b4730c51
143031062b2921
15162a025e1c31
hexb1b5fe8e561

12212201121121 has 4 divisors (see below), whose sum is σ = 12266964355072. Its totient is φ = 12157437887172.

The previous prime is 12212201121103. The next prime is 12212201121137. The reversal of 12212201121121 is 12112110221221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12212201121121 - 27 = 12212201120993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212201121101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27381616641 + ... + 27381617086.

It is an arithmetic number, because the mean of its divisors is an integer number (3066741088768).

Almost surely, 212212201121121 is an apocalyptic number.

It is an amenable number.

12212201121121 is a deficient number, since it is larger than the sum of its proper divisors (54763233951).

12212201121121 is an equidigital number, since it uses as much as digits as its factorization.

12212201121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54763233950.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12212201121121 its reverse (12112110221221), we get a palindrome (24324311342342).

The spelling of 12212201121121 in words is "twelve trillion, two hundred twelve billion, two hundred one million, one hundred twenty-one thousand, one hundred twenty-one".

Divisors: 1 223 54763233727 12212201121121