221122950 has 48 divisors (see below), whose sum is σ = 577254720. Its totient is φ = 55861920.

The previous prime is 221122949. The next prime is 221122991. The reversal of 221122950 is 59221122.

It is a self number, because there is not a number n which added to its sum of digits gives 221122950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35944 + ... + 41643.

It is an arithmetic number, because the mean of its divisors is an integer number (12026140).

Almost surely, 2^221122950 is an apocalyptic number.

221122950 is an abundant number, since it is smaller than the sum of its proper divisors (356131770).

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

221122950 is a wasteful number, since it uses less digits than its factorization.

221122950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77621 (or 77616 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 221122950 is about 14870.2034283328. The cubic root of 221122950 is about 604.7064577849.

The spelling of 221122950 in words is "two hundred twenty-one million, one hundred twenty-two thousand, nine hundred fifty".