22157101 has 4 divisors (see below), whose sum is σ = 22487872. Its totient is φ = 21826332.

The previous prime is 22157089. The next prime is 22157123. The reversal of 22157101 is 10175122.

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 22157101 - 2¹⁹ = 21632813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22157501) 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, 165285 + ... + 165418.

It is an arithmetic number, because the mean of its divisors is an integer number (5621968).

Almost surely, 2^22157101 is an apocalyptic number.

It is an amenable number.

22157101 is a deficient number, since it is larger than the sum of its proper divisors (330771).

22157101 is an equidigital number, since it uses as much as digits as its factorization.

22157101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330770.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 22157101 is about 4707.1329915353. The cubic root of 22157101 is about 280.8693262390.

It can be divided in two parts, 2215 and 7101, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 22157101 in words is "twenty-two million, one hundred fifty-seven thousand, one hundred one".