12021413432 has 24 divisors (see below), whose sum is σ = 26220175560. Its totient is φ = 5152034160.

The previous prime is 12021413431. The next prime is 12021413441. The reversal of 12021413432 is 23431412021.

It is a junction number, because it is equal to n+sod(n) for n = 12021413398 and 12021413407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021413431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15333044 + ... + 15333827.

It is an arithmetic number, because the mean of its divisors is an integer number (1092507315).

Almost surely, 2^12021413432 is an apocalyptic number.

It is an amenable number.

12021413432 is an abundant number, since it is smaller than the sum of its proper divisors (14198762128).

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

12021413432 is a wasteful number, since it uses less digits than its factorization.

12021413432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30666891 (or 30666880 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12021413432 its reverse (23431412021), we get a palindrome (35452825453).

The spelling of 12021413432 in words is "twelve billion, twenty-one million, four hundred thirteen thousand, four hundred thirty-two".