222507881 has 2 divisors, whose sum is σ = 222507882. Its totient is φ = 222507880.

The previous prime is 222507853. The next prime is 222507893. The reversal of 222507881 is 188705222.

222507881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145419481 + 77088400 = 12059^2 + 8780^2 .

It is a cyclic number.

It is not a de Polignac number, because 222507881 - 2¹⁴ = 222491497 is a prime.

It is a super-2 number, since 2×222507881² = 99019514214220322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222507581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111253940 + 111253941.

It is an arithmetic number, because the mean of its divisors is an integer number (111253941).

Almost surely, 2^222507881 is an apocalyptic number.

It is an amenable number.

222507881 is a deficient number, since it is larger than the sum of its proper divisors (1).

222507881 is an equidigital number, since it uses as much as digits as its factorization.

222507881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 222507881 is about 14916.6980595573. The cubic root of 222507881 is about 605.9662913715.

The spelling of 222507881 in words is "two hundred twenty-two million, five hundred seven thousand, eight hundred eighty-one".