22115331 has 12 divisors (see below), whose sum is σ = 36507952. Its totient is φ = 12637296.

The previous prime is 22115329. The next prime is 22115341. The reversal of 22115331 is 13351122.

It is not a de Polignac number, because 22115331 - 2¹ = 22115329 is a prime.

It is a super-2 number, since 2×22115331² = 978175730479122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22115311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175456 + ... + 175581.

Almost surely, 2^22115331 is an apocalyptic number.

22115331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22115331 is a deficient number, since it is larger than the sum of its proper divisors (14392621).

22115331 is a wasteful number, since it uses less digits than its factorization.

22115331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351050 (or 351047 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 22115331 is about 4702.6940151364. The cubic root of 22115331 is about 280.6927193246.

Adding to 22115331 its reverse (13351122), we get a palindrome (35466453).

The spelling of 22115331 in words is "twenty-two million, one hundred fifteen thousand, three hundred thirty-one".