21432300323412 has 48 divisors (see below), whose sum is σ = 57764060770752. Its totient is φ = 6112599022080.

The previous prime is 21432300323341. The next prime is 21432300323419.

It is a happy number.

21432300323412 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21432300323412² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21432300323412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432300323419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4775465743 + ... + 4775470230.

It is an arithmetic number, because the mean of its divisors is an integer number (1203417932724).

Almost surely, 2^{21432300323412} is an apocalyptic number.

21432300323412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21432300323412 is an abundant number, since it is smaller than the sum of its proper divisors (36331760447340).

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

21432300323412 is a wasteful number, since it uses less digits than its factorization.

21432300323412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9550936008 (or 9550936006 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

It can be divided in two parts, 21432300 and 323412, that added together give a palindrome (21755712).

The spelling of 21432300323412 in words is "twenty-one trillion, four hundred thirty-two billion, three hundred million, three hundred twenty-three thousand, four hundred twelve".