11122531 has 4 divisors (see below), whose sum is σ = 12711472. Its totient is φ = 9533592.

The previous prime is 11122519. The next prime is 11122561. The reversal of 11122531 is 13522111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13522111 = 83 ⋅162917.

It is a cyclic number.

It is not a de Polignac number, because 11122531 - 2¹⁷ = 10991459 is a prime.

It is a super-2 number, since 2×11122531² = 247421391691922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794460 + ... + 794473.

It is an arithmetic number, because the mean of its divisors is an integer number (3177868).

Almost surely, 2^11122531 is an apocalyptic number.

11122531 is a deficient number, since it is larger than the sum of its proper divisors (1588941).

11122531 is an equidigital number, since it uses as much as digits as its factorization.

11122531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588940.

The product of its digits is 60, while the sum is 16.

The square root of 11122531 is about 3335.0458767459. The cubic root of 11122531 is about 223.2207390171.

Adding to 11122531 its reverse (13522111), we get a palindrome (24644642).

The spelling of 11122531 in words is "eleven million, one hundred twenty-two thousand, five hundred thirty-one".