22102123 has 4 divisors (see below), whose sum is σ = 22115808. Its totient is φ = 22088440.

The previous prime is 22102121. The next prime is 22102139. The reversal of 22102123 is 32120122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22102123 - 2¹ = 22102121 is a prime.

It is a super-2 number, since 2×22102123² = 977007682214258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22102121) 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, 4036 + ... + 7777.

It is an arithmetic number, because the mean of its divisors is an integer number (5528952).

Almost surely, 2^22102123 is an apocalyptic number.

22102123 is a deficient number, since it is larger than the sum of its proper divisors (13685).

22102123 is a wasteful number, since it uses less digits than its factorization.

22102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13684.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22102123 is about 4701.2895039553. The cubic root of 22102123 is about 280.6368285681.

Adding to 22102123 its reverse (32120122), we get a palindrome (54222245).

The spelling of 22102123 in words is "twenty-two million, one hundred two thousand, one hundred twenty-three".