122220201120021 has 12 divisors (see below), whose sum is σ = 184215955311648. Its totient is φ = 77937519554664.

The previous prime is 122220201119959. The next prime is 122220201120029. The reversal of 122220201120021 is 120021102022221.

It is a happy number.

122220201120021 is a `hidden beast` number, since 1 + 22 + 220 + 201 + 1 + 200 + 21 = 666.

It is not a de Polignac number, because 122220201120021 - 2²⁷ = 122220066902293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122220201119976 and 122220201120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220201120029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295217876895 + ... + 295217877308.

It is an arithmetic number, because the mean of its divisors is an integer number (15351329609304).

Almost surely, 2^{122220201120021} is an apocalyptic number.

It is an amenable number.

122220201120021 is a deficient number, since it is larger than the sum of its proper divisors (61995754191627).

122220201120021 is a wasteful number, since it uses less digits than its factorization.

122220201120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590435754232 (or 590435754229 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122220201120021 its reverse (120021102022221), we get a palindrome (242241303142242).

The spelling of 122220201120021 in words is "one hundred twenty-two trillion, two hundred twenty billion, two hundred one million, one hundred twenty thousand, twenty-one".