202212210021 has 16 divisors (see below), whose sum is σ = 274856428224. Its totient is φ = 132211777664.

The previous prime is 202212210007. The next prime is 202212210047. The reversal of 202212210021 is 120012212202.

It is not a de Polignac number, because 202212210021 - 2⁷ = 202212209893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212210061) 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, 2929746 + ... + 2997971.

It is an arithmetic number, because the mean of its divisors is an integer number (17178526764).

Almost surely, 2^202212210021 is an apocalyptic number.

It is an amenable number.

202212210021 is a deficient number, since it is larger than the sum of its proper divisors (72644218203).

202212210021 is a wasteful number, since it uses less digits than its factorization.

202212210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5927940.

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

Adding to 202212210021 its reverse (120012212202), we get a palindrome (322224422223).

The spelling of 202212210021 in words is "two hundred two billion, two hundred twelve million, two hundred ten thousand, twenty-one".