221990762950 has 96 divisors (see below), whose sum is σ = 463387127040. Its totient is φ = 78410851200.

The previous prime is 221990762927. The next prime is 221990762989. The reversal of 221990762950 is 59267099122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12587839 + ... + 12605461.

It is an arithmetic number, because the mean of its divisors is an integer number (4826949240).

Almost surely, 2^221990762950 is an apocalyptic number.

221990762950 is an abundant number, since it is smaller than the sum of its proper divisors (241396364090).

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

221990762950 is a wasteful number, since it uses less digits than its factorization.

221990762950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18302 (or 18297 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 221990762950 in words is "two hundred twenty-one billion, nine hundred ninety million, seven hundred sixty-two thousand, nine hundred fifty".