222699427 has 2 divisors, whose sum is σ = 222699428. Its totient is φ = 222699426.

The previous prime is 222699403. The next prime is 222699467. The reversal of 222699427 is 724996222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222699427 - 2¹⁹ = 222175139 is a prime.

It is a super-2 number, since 2×222699427² = 99190069572256658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222699467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111349713 + 111349714.

It is an arithmetic number, because the mean of its divisors is an integer number (111349714).

Almost surely, 2^222699427 is an apocalyptic number.

222699427 is a deficient number, since it is larger than the sum of its proper divisors (1).

222699427 is an equidigital number, since it uses as much as digits as its factorization.

222699427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 222699427 is about 14923.1172011748. The cubic root of 222699427 is about 606.1401236094.

It can be divided in two parts, 22 and 2699427, that added together give a square (2699449 = 1643²).

The spelling of 222699427 in words is "two hundred twenty-two million, six hundred ninety-nine thousand, four hundred twenty-seven".