222131969 has 2 divisors, whose sum is σ = 222131970. Its totient is φ = 222131968.

The previous prime is 222131951. The next prime is 222131971. The reversal of 222131969 is 969131222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163532944 + 58599025 = 12788^2 + 7655^2 .

It is a cyclic number.

It is not a de Polignac number, because 222131969 - 2⁸ = 222131713 is a prime.

It is a super-2 number, since 2×222131969² = 98685223303633922, which contains 22 as substring.

Together with 222131971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222131989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111065984 + 111065985.

It is an arithmetic number, because the mean of its divisors is an integer number (111065985).

Almost surely, 2^222131969 is an apocalyptic number.

It is an amenable number.

222131969 is a deficient number, since it is larger than the sum of its proper divisors (1).

222131969 is an equidigital number, since it uses as much as digits as its factorization.

222131969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 222131969 is about 14904.0923574701. The cubic root of 222131969 is about 605.6248526793.

The spelling of 222131969 in words is "two hundred twenty-two million, one hundred thirty-one thousand, nine hundred sixty-nine".