221102111232 has 120 divisors (see below), whose sum is σ = 655362538116. Its totient is φ = 71708737536.

The previous prime is 221102111227. The next prime is 221102111357. The reversal of 221102111232 is 232111201122.

221102111232 is a `hidden beast` number, since 221 + 1 + 0 + 211 + 1 + 232 = 666.

221102111232 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 2 ways, for example, as 220058562816 + 1043548416 = 469104^2 + 32304^2 .

It is a super-2 number, since 2×221102111232² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 477913 + ... + 818904.

Almost surely, 2^221102111232 is an apocalyptic number.

It is an amenable number.

221102111232 is an abundant number, since it is smaller than the sum of its proper divisors (434260426884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221102111232 is a wasteful number, since it uses less digits than its factorization.

221102111232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296878 (or 1296859 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 221102111232 its reverse (232111201122), we get a palindrome (453213312354).

The spelling of 221102111232 in words is "two hundred twenty-one billion, one hundred two million, one hundred eleven thousand, two hundred thirty-two".