222271531 has 2 divisors, whose sum is σ = 222271532. Its totient is φ = 222271530.

The previous prime is 222271513. The next prime is 222271541. The reversal of 222271531 is 135172222.

Together with previous prime (222271513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222271531 - 2⁹ = 222271019 is a prime.

It is a super-2 number, since 2×222271531² = 98809266986167922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222271496 and 222271505.

It is not a weakly prime, because it can be changed into another prime (222271541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111135765 + 111135766.

It is an arithmetic number, because the mean of its divisors is an integer number (111135766).

Almost surely, 2^222271531 is an apocalyptic number.

222271531 is a deficient number, since it is larger than the sum of its proper divisors (1).

222271531 is an equidigital number, since it uses as much as digits as its factorization.

222271531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 222271531 is about 14908.7736249498. The cubic root of 222271531 is about 605.7516609620.

The spelling of 222271531 in words is "two hundred twenty-two million, two hundred seventy-one thousand, five hundred thirty-one".