21000432133002 has 64 divisors (see below), whose sum is σ = 48816530519040. Its totient is φ = 5898188814336.

The previous prime is 21000432133001. The next prime is 21000432133027. The reversal of 21000432133002 is 20033123400012.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21000432133002.

It is not an unprimeable number, because it can be changed into a prime (21000432133001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66617418 + ... + 66931914.

It is an arithmetic number, because the mean of its divisors is an integer number (762758289360).

Almost surely, 2^{21000432133002} is an apocalyptic number.

21000432133002 is an abundant number, since it is smaller than the sum of its proper divisors (27816098386038).

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

21000432133002 is a wasteful number, since it uses less digits than its factorization.

21000432133002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341515.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21000432133002 its reverse (20033123400012), we get a palindrome (41033555533014).

The spelling of 21000432133002 in words is "twenty-one trillion, four hundred thirty-two million, one hundred thirty-three thousand, two".