12120213100 has 18 divisors (see below), whose sum is σ = 26300862644. Its totient is φ = 4848085200.

The previous prime is 12120213089. The next prime is 12120213143. The reversal of 12120213100 is 131202121.

It is a super-2 number, since 2×12120213100² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60600966 + ... + 60601165.

Almost surely, 2^12120213100 is an apocalyptic number.

12120213100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120213100 is an abundant number, since it is smaller than the sum of its proper divisors (14180649544).

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

12120213100 is a wasteful number, since it uses less digits than its factorization.

12120213100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121202145 (or 121202138 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12120213100 its reverse (131202121), we get a palindrome (12251415221).

It can be divided in two parts, 1212021 and 3100, that added together give a palindrome (1215121).

The spelling of 12120213100 in words is "twelve billion, one hundred twenty million, two hundred thirteen thousand, one hundred".