222651469 has 2 divisors, whose sum is σ = 222651470. Its totient is φ = 222651468.

The previous prime is 222651449. The next prime is 222651479. The reversal of 222651469 is 964156222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168039369 + 54612100 = 12963^2 + 7390^2 .

It is a cyclic number.

It is not a de Polignac number, because 222651469 - 2⁵ = 222651437 is a prime.

It is a super-2 number, since 2×222651469² = 99147353295715922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222651409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111325734 + 111325735.

It is an arithmetic number, because the mean of its divisors is an integer number (111325735).

Almost surely, 2^222651469 is an apocalyptic number.

It is an amenable number.

222651469 is a deficient number, since it is larger than the sum of its proper divisors (1).

222651469 is an equidigital number, since it uses as much as digits as its factorization.

222651469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 222651469 is about 14921.5102787888. The cubic root of 222651469 is about 606.0966100190.

The spelling of 222651469 in words is "two hundred twenty-two million, six hundred fifty-one thousand, four hundred sixty-nine".