222051979 has 2 divisors, whose sum is σ = 222051980. Its totient is φ = 222051978.

The previous prime is 222051971. The next prime is 222052009. The reversal of 222051979 is 979150222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222051979 - 2³ = 222051971 is a prime.

It is not a weakly prime, because it can be changed into another prime (222051971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111025989 + 111025990.

It is an arithmetic number, because the mean of its divisors is an integer number (111025990).

Almost surely, 2^222051979 is an apocalyptic number.

222051979 is a deficient number, since it is larger than the sum of its proper divisors (1).

222051979 is an equidigital number, since it uses as much as digits as its factorization.

222051979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 222051979 is about 14901.4086246905. The cubic root of 222051979 is about 605.5521485292.

The spelling of 222051979 in words is "two hundred twenty-two million, fifty-one thousand, nine hundred seventy-nine".