221353295522 has 18 divisors (see below), whose sum is σ = 338466783123. Its totient is φ = 108571109712.

The previous prime is 221353295509. The next prime is 221353295543. The reversal of 221353295522 is 225592353122.

It can be written as a sum of positive squares in 5 ways, for example, as 220036984561 + 1316310961 = 469081^2 + 36281^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332681.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221353295522.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35261048 + ... + 35267324.

Almost surely, 2^221353295522 is an apocalyptic number.

221353295522 is a deficient number, since it is larger than the sum of its proper divisors (117113487601).

221353295522 is an frugal number, since it uses more digits than its factorization.

221353295522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12662 (or 6332 counting only the distinct ones).

The product of its digits is 324000, while the sum is 41.

The spelling of 221353295522 in words is "two hundred twenty-one billion, three hundred fifty-three million, two hundred ninety-five thousand, five hundred twenty-two".