12102123 has 16 divisors (see below), whose sum is σ = 17782272. Its totient is φ = 7260000.

The previous prime is 12102091. The next prime is 12102127. The reversal of 12102123 is 32120121.

It is not a de Polignac number, because 12102123 - 2⁵ = 12102091 is a prime.

It is a super-2 number, since 2×12102123² = 292922762214258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12102099 and 12102108.

It is not an unprimeable number, because it can be changed into a prime (12102127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518 + ... + 5148.

It is an arithmetic number, because the mean of its divisors is an integer number (1111392).

Almost surely, 2^12102123 is an apocalyptic number.

12102123 is a deficient number, since it is larger than the sum of its proper divisors (5680149).

12102123 is a wasteful number, since it uses less digits than its factorization.

12102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3746.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12102123 is about 3478.8105725952. The cubic root of 12102123 is about 229.5904684599.

Adding to 12102123 its reverse (32120121), we get a palindrome (44222244).

It can be divided in two parts, 1210 and 2123, that added together give a palindrome (3333).

The spelling of 12102123 in words is "twelve million, one hundred two thousand, one hundred twenty-three".