122112212102121 has 4 divisors (see below), whose sum is σ = 162816282802832. Its totient is φ = 81408141401412.

The previous prime is 122112212102093. The next prime is 122112212102147. The reversal of 122112212102121 is 121201212211221.

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 not a de Polignac number, because 122112212102121 - 2¹⁸ = 122112211839977 is a prime.

It is a super-2 number, since 2×122112212102121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122112212104121) 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, 20352035350351 + ... + 20352035350356.

It is an arithmetic number, because the mean of its divisors is an integer number (40704070700708).

Almost surely, 2^{122112212102121} is an apocalyptic number.

It is an amenable number.

122112212102121 is a deficient number, since it is larger than the sum of its proper divisors (40704070700711).

122112212102121 is an equidigital number, since it uses as much as digits as its factorization.

122112212102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40704070700710.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 122112212102121 its reverse (121201212211221), we get a palindrome (243313424313342).

The spelling of 122112212102121 in words is "one hundred twenty-two trillion, one hundred twelve billion, two hundred twelve million, one hundred two thousand, one hundred twenty-one".