202001201212221 has 32 divisors (see below), whose sum is σ = 300329740650240. Its totient is φ = 134186563526400.

The previous prime is 202001201212211. The next prime is 202001201212259. The reversal of 202001201212221 is 122212102100202.

It is a happy number.

202001201212221 is a `hidden beast` number, since 2 + 0 + 200 + 120 + 121 + 2 + 221 = 666.

It is not a de Polignac number, because 202001201212221 - 2⁷ = 202001201212093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202001201212194 and 202001201212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202001201212211) 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, 1079013001 + ... + 1079200193.

It is an arithmetic number, because the mean of its divisors is an integer number (9385304395320).

Almost surely, 2^{202001201212221} is an apocalyptic number.

It is an amenable number.

202001201212221 is a deficient number, since it is larger than the sum of its proper divisors (98328539438019).

202001201212221 is a wasteful number, since it uses less digits than its factorization.

202001201212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329714 (or 329708 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202001201212221 its reverse (122212102100202), we get a palindrome (324213303312423).

The spelling of 202001201212221 in words is "two hundred two trillion, one billion, two hundred one million, two hundred twelve thousand, two hundred twenty-one".