21443133134412 has 72 divisors (see below), whose sum is σ = 59142006024192. Its totient is φ = 6496716722400.

The previous prime is 21443133134399. The next prime is 21443133134413.

21443133134412 is a `hidden beast` number, since 2 + 14 + 4 + 313 + 313 + 4 + 4 + 12 = 666.

21443133134412 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21443133134413) 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, 2866164 + ... + 7148507.

It is an arithmetic number, because the mean of its divisors is an integer number (821416750336).

Almost surely, 2^{21443133134412} is an apocalyptic number.

21443133134412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21443133134412 is an abundant number, since it is smaller than the sum of its proper divisors (37698872889780).

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

21443133134412 is a wasteful number, since it uses less digits than its factorization.

21443133134412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020099 (or 10020094 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

It can be divided in two parts, 2144313 and 3134412, that added together give a palindrome (5278725).

The spelling of 21443133134412 in words is "twenty-one trillion, four hundred forty-three billion, one hundred thirty-three million, one hundred thirty-four thousand, four hundred twelve".