222428051 has 4 divisors (see below), whose sum is σ = 235512072. Its totient is φ = 209344032.

The previous prime is 222428047. The next prime is 222428077. The reversal of 222428051 is 150824222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222428051 - 2² = 222428047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222428051.

It is not an unprimeable number, because it can be changed into a prime (222428951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6541985 + ... + 6542018.

It is an arithmetic number, because the mean of its divisors is an integer number (58878018).

Almost surely, 2^222428051 is an apocalyptic number.

222428051 is a deficient number, since it is larger than the sum of its proper divisors (13084021).

222428051 is a wasteful number, since it uses less digits than its factorization.

222428051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13084020.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 222428051 is about 14914.0219592168. The cubic root of 222428051 is about 605.8938144250.

The spelling of 222428051 in words is "two hundred twenty-two million, four hundred twenty-eight thousand, fifty-one".