221222050 has 48 divisors (see below), whose sum is σ = 490718592. Its totient is φ = 72547200.

The previous prime is 221222039. The next prime is 221222069. The reversal of 221222050 is 50222122.

221222050 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 5691 + ... + 21790.

It is an arithmetic number, because the mean of its divisors is an integer number (10223304).

Almost surely, 2^221222050 is an apocalyptic number.

221222050 is an abundant number, since it is smaller than the sum of its proper divisors (269496542).

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

221222050 is a wasteful number, since it uses less digits than its factorization.

221222050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27523 (or 27518 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 221222050 is about 14873.5352219975. The cubic root of 221222050 is about 604.7967807777.

Adding to 221222050 its reverse (50222122), we get a palindrome (271444172).

The spelling of 221222050 in words is "two hundred twenty-one million, two hundred twenty-two thousand, fifty".