201221212012202 has 32 divisors (see below), whose sum is σ = 310357024153344. Its totient is φ = 97787390745600.

The previous prime is 201221212012189. The next prime is 201221212012217. The reversal of 201221212012202 is 202210212122102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312630938 + ... + 313273914.

It is an arithmetic number, because the mean of its divisors is an integer number (9698657004792).

Almost surely, 2^{201221212012202} is an apocalyptic number.

201221212012202 is a deficient number, since it is larger than the sum of its proper divisors (109135812141142).

201221212012202 is a wasteful number, since it uses less digits than its factorization.

201221212012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657374.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201221212012202 its reverse (202210212122102), we get a palindrome (403431424134304).

The spelling of 201221212012202 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred twelve million, twelve thousand, two hundred two".