122112042121 has 4 divisors (see below), whose sum is σ = 123297596032. Its totient is φ = 120926488212.

The previous prime is 122112042103. The next prime is 122112042137. The reversal of 122112042121 is 121240211221.

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 122112042121 - 2⁹ = 122112041609 is a prime.

It is a super-2 number, since 2×122112042121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122110042121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592776801 + ... + 592777006.

It is an arithmetic number, because the mean of its divisors is an integer number (30824399008).

Almost surely, 2^122112042121 is an apocalyptic number.

It is an amenable number.

122112042121 is a deficient number, since it is larger than the sum of its proper divisors (1185553911).

122112042121 is a wasteful number, since it uses less digits than its factorization.

122112042121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185553910.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122112042121 its reverse (121240211221), we get a palindrome (243352253342).

The spelling of 122112042121 in words is "one hundred twenty-two billion, one hundred twelve million, forty-two thousand, one hundred twenty-one".