12021131212 has 6 divisors (see below), whose sum is σ = 21036979628. Its totient is φ = 6010565604.

The previous prime is 12021131209. The next prime is 12021131251. The reversal of 12021131212 is 21213112021.

It is a super-2 number, since 2×12021131212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1502641398 + ... + 1502641405.

Almost surely, 2^12021131212 is an apocalyptic number.

It is an amenable number.

12021131212 is a deficient number, since it is larger than the sum of its proper divisors (9015848416).

12021131212 is a wasteful number, since it uses less digits than its factorization.

12021131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005282807 (or 3005282805 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12021131212 its reverse (21213112021), we get a palindrome (33234243233).

The spelling of 12021131212 in words is "twelve billion, twenty-one million, one hundred thirty-one thousand, two hundred twelve".