22101690 has 32 divisors (see below), whose sum is σ = 57125376. Its totient is φ = 5440320.

The previous prime is 22101679. The next prime is 22101701. The reversal of 22101690 is 9610122.

It is an interprime number because it is at equal distance from previous prime (22101679) and next prime (22101701).

It is a super-2 number, since 2×22101690² = 976969401712200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27946 + ... + 28725.

It is an arithmetic number, because the mean of its divisors is an integer number (1785168).

Almost surely, 2^22101690 is an apocalyptic number.

22101690 is an abundant number, since it is smaller than the sum of its proper divisors (35023686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22101690 is a wasteful number, since it uses less digits than its factorization.

22101690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56694.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 22101690 is about 4701.2434525347. The cubic root of 22101690 is about 280.6349959155.

It can be divided in two parts, 22101 and 690, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 22101690 in words is "twenty-two million, one hundred one thousand, six hundred ninety".