12021133100 has 36 divisors (see below), whose sum is σ = 26230019088. Its totient is φ = 4781880000.

The previous prime is 12021133081. The next prime is 12021133127. The reversal of 12021133100 is 133112021.

It is a super-2 number, since 2×12021133100² (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 11 ways as a sum of consecutive naturals, for example, 313976 + ... + 350175.

Almost surely, 2^12021133100 is an apocalyptic number.

12021133100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021133100 is an abundant number, since it is smaller than the sum of its proper divisors (14208885988).

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

12021133100 is a wasteful number, since it uses less digits than its factorization.

12021133100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664346 (or 664339 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12021133100 its reverse (133112021), we get a palindrome (12154245121).

The spelling of 12021133100 in words is "twelve billion, twenty-one million, one hundred thirty-three thousand, one hundred".