20212100122201 has 24 divisors (see below), whose sum is σ = 22486403351552. Its totient is φ = 18058939113600.

The previous prime is 20212100122147. The next prime is 20212100122211. The reversal of 20212100122201 is 10222100121202.

It is a happy number.

It is not a de Polignac number, because 20212100122201 - 2⁴¹ = 18013076866649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212100122211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 866055 + ... + 6416716.

Almost surely, 2^{20212100122201} is an apocalyptic number.

It is an amenable number.

20212100122201 is a deficient number, since it is larger than the sum of its proper divisors (2274303229351).

20212100122201 is a wasteful number, since it uses less digits than its factorization.

20212100122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282993 (or 7282952 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20212100122201 its reverse (10222100121202), we get a palindrome (30434200243403).

Subtracting from 20212100122201 its reverse (10222100121202), we obtain a palindrome (9990000000999).

The spelling of 20212100122201 in words is "twenty trillion, two hundred twelve billion, one hundred million, one hundred twenty-two thousand, two hundred one".