122100021210021 has 16 divisors (see below), whose sum is σ = 163785589584000. Its totient is φ = 80908070842368.

The previous prime is 122100021209993. The next prime is 122100021210047. The reversal of 122100021210021 is 120012120001221.

It is not a de Polignac number, because 122100021210021 - 2³⁵ = 122065661471653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122100021210121) 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, 104085436 + ... + 105251973.

It is an arithmetic number, because the mean of its divisors is an integer number (10236599349000).

Almost surely, 2^{122100021210021} is an apocalyptic number.

It is an amenable number.

122100021210021 is a deficient number, since it is larger than the sum of its proper divisors (41685568373979).

122100021210021 is a wasteful number, since it uses less digits than its factorization.

122100021210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209338588.

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

Adding to 122100021210021 its reverse (120012120001221), we get a palindrome (242112141211242).

The spelling of 122100021210021 in words is "one hundred twenty-two trillion, one hundred billion, twenty-one million, two hundred ten thousand, twenty-one".