122001220200021 has 16 divisors (see below), whose sum is σ = 162838415184000. Its totient is φ = 81249097973760.

The previous prime is 122001220200011. The next prime is 122001220200031. The reversal of 122001220200021 is 120002022100221.

It is an interprime number because it is at equal distance from previous prime (122001220200011) and next prime (122001220200031).

It is not a de Polignac number, because 122001220200021 - 2²² = 122001216005717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122001220200011) 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, 39490581 + ... + 42467733.

It is an arithmetic number, because the mean of its divisors is an integer number (10177400949000).

Almost surely, 2^{122001220200021} is an apocalyptic number.

It is an amenable number.

122001220200021 is a deficient number, since it is larger than the sum of its proper divisors (40837194983979).

122001220200021 is a wasteful number, since it uses less digits than its factorization.

122001220200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991436.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122001220200021 its reverse (120002022100221), we get a palindrome (242003242300242).

The spelling of 122001220200021 in words is "one hundred twenty-two trillion, one billion, two hundred twenty million, two hundred thousand, twenty-one".