222051522 has 64 divisors (see below), whose sum is σ = 577787904. Its totient is φ = 55165440.

The previous prime is 222051509. The next prime is 222051551. The reversal of 222051522 is 225150222.

222051522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178 + ... + 21074.

It is an arithmetic number, because the mean of its divisors is an integer number (9027936).

Almost surely, 2^222051522 is an apocalyptic number.

222051522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 222051522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288893952).

222051522 is an abundant number, since it is smaller than the sum of its proper divisors (355736382).

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

222051522 is a wasteful number, since it uses less digits than its factorization.

222051522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20943.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 222051522 is about 14901.3932905618. The cubic root of 222051522 is about 605.5517331047.

The spelling of 222051522 in words is "two hundred twenty-two million, fifty-one thousand, five hundred twenty-two".