222085531 has 2 divisors, whose sum is σ = 222085532. Its totient is φ = 222085530.

The previous prime is 222085517. The next prime is 222085537. The reversal of 222085531 is 135580222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222085531 - 2⁷ = 222085403 is a prime.

It is a super-2 number, since 2×222085531² = 98643966159103922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222085531.

It is not a weakly prime, because it can be changed into another prime (222085537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111042765 + 111042766.

It is an arithmetic number, because the mean of its divisors is an integer number (111042766).

Almost surely, 2^222085531 is an apocalyptic number.

222085531 is a deficient number, since it is larger than the sum of its proper divisors (1).

222085531 is an equidigital number, since it uses as much as digits as its factorization.

222085531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 222085531 is about 14902.5343817755. The cubic root of 222085531 is about 605.5826465873.

The spelling of 222085531 in words is "two hundred twenty-two million, eighty-five thousand, five hundred thirty-one".