220221221100202 has 24 divisors (see below), whose sum is σ = 384289608258756. Its totient is φ = 94374125330688.

The previous prime is 220221221100157. The next prime is 220221221100227. The reversal of 220221221100202 is 202001122122022.

It can be written as a sum of positive squares in 2 ways, for example, as 192840186929481 + 27381034170721 = 13886691^2 + 5232689^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220221221100202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74713473 + ... + 77605060.

Almost surely, 2^{220221221100202} is an apocalyptic number.

220221221100202 is a deficient number, since it is larger than the sum of its proper divisors (164068387158554).

220221221100202 is a wasteful number, since it uses less digits than its factorization.

220221221100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152333302 (or 152333295 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220221221100202 its reverse (202001122122022), we get a palindrome (422222343222224).

The spelling of 220221221100202 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred thousand, two hundred two".