201221210112202 has 48 divisors (see below), whose sum is σ = 366585228119808. Its totient is φ = 81131684739840.

The previous prime is 201221210112199. The next prime is 201221210112341. The reversal of 201221210112202 is 202211012122102.

It is a self number, because there is not a number n which added to its sum of digits gives 201221210112202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261549 + ... + 20062672.

It is an arithmetic number, because the mean of its divisors is an integer number (7637192252496).

Almost surely, 2^{201221210112202} is an apocalyptic number.

201221210112202 is a deficient number, since it is larger than the sum of its proper divisors (165364018007606).

201221210112202 is a wasteful number, since it uses less digits than its factorization.

201221210112202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20326711 (or 20326694 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201221210112202 its reverse (202211012122102), we get a palindrome (403432222234304).

The spelling of 201221210112202 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred ten million, one hundred twelve thousand, two hundred two".