202220221220090 has 16 divisors (see below), whose sum is σ = 364086118850472. Its totient is φ = 80868150564864.

The previous prime is 202220221220089. The next prime is 202220221220161. The reversal of 202220221220090 is 90022122022202.

It can be written as a sum of positive squares in 4 ways, for example, as 164842000924561 + 37378220295529 = 12839081^2 + 6113773^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2492197799 + ... + 2492278938.

Almost surely, 2^{202220221220090} is an apocalyptic number.

202220221220090 is a deficient number, since it is larger than the sum of its proper divisors (161865897630382).

202220221220090 is a wasteful number, since it uses less digits than its factorization.

202220221220090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984480801.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 202220221220090 its reverse (90022122022202), we get a palindrome (292242343242292).

The spelling of 202220221220090 in words is "two hundred two trillion, two hundred twenty billion, two hundred twenty-one million, two hundred twenty thousand, ninety".