222357881 has 2 divisors, whose sum is σ = 222357882. Its totient is φ = 222357880.

The previous prime is 222357851. The next prime is 222357887. The reversal of 222357881 is 188753222.

222357881 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., 147379600 + 74978281 = 12140^2 + 8659^2 .

It is a cyclic number.

It is not a de Polignac number, because 222357881 - 2¹⁰ = 222356857 is a prime.

It is a super-2 number, since 2×222357881² = 98886054485620322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (222357887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111178940 + 111178941.

It is an arithmetic number, because the mean of its divisors is an integer number (111178941).

Almost surely, 2^222357881 is an apocalyptic number.

It is an amenable number.

222357881 is a deficient number, since it is larger than the sum of its proper divisors (1).

222357881 is an equidigital number, since it uses as much as digits as its factorization.

222357881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 222357881 is about 14911.6692895195. The cubic root of 222357881 is about 605.8300933845.

The spelling of 222357881 in words is "two hundred twenty-two million, three hundred fifty-seven thousand, eight hundred eighty-one".