12132011421 has 24 divisors (see below), whose sum is σ = 17588503296. Its totient is φ = 8058304800.

The previous prime is 12132011389. The next prime is 12132011473. The reversal of 12132011421 is 12411023121.

12132011421 is a `hidden beast` number, since 1 + 213 + 20 + 11 + 421 = 666.

It is not a de Polignac number, because 12132011421 - 2⁵ = 12132011389 is a prime.

It is a super-2 number, since 2×12132011421² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12132011394 and 12132011403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132011321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3171516 + ... + 3175338.

It is an arithmetic number, because the mean of its divisors is an integer number (732854304).

Almost surely, 2^12132011421 is an apocalyptic number.

It is an amenable number.

12132011421 is a deficient number, since it is larger than the sum of its proper divisors (5456491875).

12132011421 is a wasteful number, since it uses less digits than its factorization.

12132011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5033 (or 5030 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12132011421 its reverse (12411023121), we get a palindrome (24543034542).

The spelling of 12132011421 in words is "twelve billion, one hundred thirty-two million, eleven thousand, four hundred twenty-one".