202122211210221 has 8 divisors (see below), whose sum is σ = 269497947041344. Its totient is φ = 134747308092960.

The previous prime is 202122211210193. The next prime is 202122211210261. The reversal of 202122211210221 is 122012112221202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202122211210221 - 2²⁶ = 202122144101357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202122211210261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207611881 + ... + 208583166.

It is an arithmetic number, because the mean of its divisors is an integer number (33687243380168).

Almost surely, 2^{202122211210221} is an apocalyptic number.

It is an amenable number.

202122211210221 is a deficient number, since it is larger than the sum of its proper divisors (67375735831123).

202122211210221 is a wasteful number, since it uses less digits than its factorization.

202122211210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416356931.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 202122211210221 its reverse (122012112221202), we get a palindrome (324134323431423).

The spelling of 202122211210221 in words is "two hundred two trillion, one hundred twenty-two billion, two hundred eleven million, two hundred ten thousand, two hundred twenty-one".