122112120021 has 8 divisors (see below), whose sum is σ = 162905089344. Its totient is φ = 81363615360.

The previous prime is 122112120017. The next prime is 122112120023. The reversal of 122112120021 is 120021211221.

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

It is not a de Polignac number, because 122112120021 - 2² = 122112120017 is a prime.

It is a super-2 number, since 2×122112120021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122112120023) 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, 11109756 + ... + 11120741.

It is an arithmetic number, because the mean of its divisors is an integer number (20363136168).

Almost surely, 2^122112120021 is an apocalyptic number.

It is an amenable number.

122112120021 is a deficient number, since it is larger than the sum of its proper divisors (40792969323).

122112120021 is a wasteful number, since it uses less digits than its factorization.

122112120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22232331.

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

Adding to 122112120021 its reverse (120021211221), we get a palindrome (242133331242).

The spelling of 122112120021 in words is "one hundred twenty-two billion, one hundred twelve million, one hundred twenty thousand, twenty-one".