12102920 has 16 divisors (see below), whose sum is σ = 27231660. Its totient is φ = 4841152.

The previous prime is 12102919. The next prime is 12102941. The reversal of 12102920 is 2920121.

It can be written as a sum of positive squares in 2 ways, for example, as 11546404 + 556516 = 3398^2 + 746^2 .

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151247 + ... + 151326.

Almost surely, 2^12102920 is an apocalyptic number.

12102920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102920 is an abundant number, since it is smaller than the sum of its proper divisors (15128740).

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

12102920 is a wasteful number, since it uses less digits than its factorization.

12102920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302584 (or 302580 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 12102920 is about 3478.9251213557. The cubic root of 12102920 is about 229.5955083356.

The spelling of 12102920 in words is "twelve million, one hundred two thousand, nine hundred twenty".