202221021011021 has 16 divisors (see below), whose sum is σ = 229284334755840. Its totient is φ = 177337102638960.

The previous prime is 202221021011017. The next prime is 202221021011027. The reversal of 202221021011021 is 120110120122202.

It is not a de Polignac number, because 202221021011021 - 2² = 202221021011017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221021011027) 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, 7463669225 + ... + 7463696318.

It is an arithmetic number, because the mean of its divisors is an integer number (14330270922240).

Almost surely, 2^{202221021011021} is an apocalyptic number.

It is an amenable number.

202221021011021 is a deficient number, since it is larger than the sum of its proper divisors (27063313744819).

202221021011021 is a wasteful number, since it uses less digits than its factorization.

202221021011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14927365616.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202221021011021 its reverse (120110120122202), we get a palindrome (322331141133223).

The spelling of 202221021011021 in words is "two hundred two trillion, two hundred twenty-one billion, twenty-one million, eleven thousand, twenty-one".