22100156 has 12 divisors (see below), whose sum is σ = 41650392. Its totient is φ = 10200048.

The previous prime is 22100149. The next prime is 22100167. The reversal of 22100156 is 65100122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212450 + ... + 212553.

It is an arithmetic number, because the mean of its divisors is an integer number (3470866).

Almost surely, 2^22100156 is an apocalyptic number.

22100156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22100156 is a deficient number, since it is larger than the sum of its proper divisors (19550236).

22100156 is a wasteful number, since it uses less digits than its factorization.

22100156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425020 (or 425018 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 22100156 is about 4701.0803013775. The cubic root of 22100156 is about 280.6285031383.

Adding to 22100156 its reverse (65100122), we get a palindrome (87200278).

The spelling of 22100156 in words is "twenty-two million, one hundred thousand, one hundred fifty-six".