22149946531 has 2 divisors, whose sum is σ = 22149946532. Its totient is φ = 22149946530.

The previous prime is 22149946513. The next prime is 22149946543. The reversal of 22149946531 is 13564994122.

Together with previous prime (22149946513) 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 22149946531 - 2¹⁵ = 22149913763 is a prime.

It is a super-2 number, since 2×22149946531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22149946031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11074973265 + 11074973266.

It is an arithmetic number, because the mean of its divisors is an integer number (11074973266).

Almost surely, 2^22149946531 is an apocalyptic number.

22149946531 is a deficient number, since it is larger than the sum of its proper divisors (1).

22149946531 is an equidigital number, since it uses as much as digits as its factorization.

22149946531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 46.

The spelling of 22149946531 in words is "twenty-two billion, one hundred forty-nine million, nine hundred forty-six thousand, five hundred thirty-one".