2120022210021 has 32 divisors (see below), whose sum is σ = 2956849660800. Its totient is φ = 1349844787200.

The previous prime is 2120022209953. The next prime is 2120022210071. The reversal of 2120022210021 is 1200122200212.

It is not a de Polignac number, because 2120022210021 - 2¹⁵ = 2120022177253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120022210071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2564886 + ... + 3289176.

It is an arithmetic number, because the mean of its divisors is an integer number (92401551900).

Almost surely, 2^{2120022210021} is an apocalyptic number.

It is an amenable number.

2120022210021 is a deficient number, since it is larger than the sum of its proper divisors (836827450779).

2120022210021 is a wasteful number, since it uses less digits than its factorization.

2120022210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724837.

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

Adding to 2120022210021 its reverse (1200122200212), we get a palindrome (3320144410233).

The spelling of 2120022210021 in words is "two trillion, one hundred twenty billion, twenty-two million, two hundred ten thousand, twenty-one".