22106157 has 4 divisors (see below), whose sum is σ = 29474880. Its totient is φ = 14737436.

The previous prime is 22106153. The next prime is 22106159. The reversal of 22106157 is 75160122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22106157 - 2² = 22106153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22106153) 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, 3684357 + ... + 3684362.

It is an arithmetic number, because the mean of its divisors is an integer number (7368720).

Almost surely, 2^22106157 is an apocalyptic number.

It is an amenable number.

22106157 is a deficient number, since it is larger than the sum of its proper divisors (7368723).

22106157 is an equidigital number, since it uses as much as digits as its factorization.

22106157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7368722.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 22106157 is about 4701.7185156068. The cubic root of 22106157 is about 280.6539011376.

Adding to 22106157 its reverse (75160122), we get a palindrome (97266279).

The spelling of 22106157 in words is "twenty-two million, one hundred six thousand, one hundred fifty-seven".