221232229990 has 16 divisors (see below), whose sum is σ = 399474227952. Its totient is φ = 88213733344.

The previous prime is 221232229973. The next prime is 221232230017. The reversal of 221232229990 is 99922232122.

It is a congruent number.

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, 34891504 + ... + 34897843.

It is an arithmetic number, because the mean of its divisors is an integer number (24967139247).

Almost surely, 2^221232229990 is an apocalyptic number.

221232229990 is a deficient number, since it is larger than the sum of its proper divisors (178241997962).

221232229990 is a wasteful number, since it uses less digits than its factorization.

221232229990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69789671.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 221232229990 in words is "two hundred twenty-one billion, two hundred thirty-two million, two hundred twenty-nine thousand, nine hundred ninety".