221253539522 has 16 divisors (see below), whose sum is σ = 332653721400. Its totient is φ = 110369043840.

The previous prime is 221253539503. The next prime is 221253539531. The reversal of 221253539522 is 225935352122.

221253539522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 208062787321 + 13190752201 = 456139^2 + 114851^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221253539522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7166054 + ... + 7196862.

Almost surely, 2^221253539522 is an apocalyptic number.

221253539522 is a deficient number, since it is larger than the sum of its proper divisors (111400181878).

221253539522 is a wasteful number, since it uses less digits than its factorization.

221253539522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39061.

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

The spelling of 221253539522 in words is "two hundred twenty-one billion, two hundred fifty-three million, five hundred thirty-nine thousand, five hundred twenty-two".