122011112121 has 8 divisors (see below), whose sum is σ = 162955821600. Its totient is φ = 81203572032.

The previous prime is 122011112107. The next prime is 122011112129. The reversal of 122011112121 is 121211110221.

It is a happy number.

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

It is not a de Polignac number, because 122011112121 - 2²² = 122006917817 is a prime.

It is a super-2 number, since 2×122011112121² (a number of 23 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 122011112121.

It is not an unprimeable number, because it can be changed into a prime (122011112129) 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, 34290271 + ... + 34293828.

It is an arithmetic number, because the mean of its divisors is an integer number (20369477700).

Almost surely, 2^122011112121 is an apocalyptic number.

It is an amenable number.

122011112121 is a deficient number, since it is larger than the sum of its proper divisors (40944709479).

122011112121 is an equidigital number, since it uses as much as digits as its factorization.

122011112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68584695.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122011112121 its reverse (121211110221), we get a palindrome (243222222342).

The spelling of 122011112121 in words is "one hundred twenty-two billion, eleven million, one hundred twelve thousand, one hundred twenty-one".