122112120012121 has 4 divisors (see below), whose sum is σ = 122190952886500. Its totient is φ = 122033287137744.

The previous prime is 122112120012079. The next prime is 122112120012151. The reversal of 122112120012121 is 121210021211221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54035363265625 + 68076756746496 = 7350875^2 + 8250864^2 .

It is a cyclic number.

It is not a de Polignac number, because 122112120012121 - 2²⁵ = 122112086457689 is a prime.

It is a super-2 number, since 2×122112120012121² (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 (122112120012151) 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, 39416434866 + ... + 39416437963.

It is an arithmetic number, because the mean of its divisors is an integer number (30547738221625).

Almost surely, 2^{122112120012121} is an apocalyptic number.

It is an amenable number.

122112120012121 is a deficient number, since it is larger than the sum of its proper divisors (78832874379).

122112120012121 is an equidigital number, since it uses as much as digits as its factorization.

122112120012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78832874378.

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

Adding to 122112120012121 its reverse (121210021211221), we get a palindrome (243322141223342).

The spelling of 122112120012121 in words is "one hundred twenty-two trillion, one hundred twelve billion, one hundred twenty million, twelve thousand, one hundred twenty-one".