122012210121 has 16 divisors (see below), whose sum is σ = 165838473984. Its totient is φ = 79774407504.

The previous prime is 122012210113. The next prime is 122012210129. The reversal of 122012210121 is 121012210221.

It is an interprime number because it is at equal distance from previous prime (122012210113) and next prime (122012210129).

It is not a de Polignac number, because 122012210121 - 2³ = 122012210113 is a prime.

It is a super-2 number, since 2×122012210121² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122012210121.

It is not an unprimeable number, because it can be changed into a prime (122012210129) 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, 1291435 + ... + 1382688.

It is an arithmetic number, because the mean of its divisors is an integer number (10364904624).

Almost surely, 2^122012210121 is an apocalyptic number.

It is an amenable number.

122012210121 is a deficient number, since it is larger than the sum of its proper divisors (43826263863).

122012210121 is a wasteful number, since it uses less digits than its factorization.

122012210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674420.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122012210121 its reverse (121012210221), we get a palindrome (243024420342).

The spelling of 122012210121 in words is "one hundred twenty-two billion, twelve million, two hundred ten thousand, one hundred twenty-one".