21000132230012 has 12 divisors (see below), whose sum is σ = 39577172279736. Its totient is φ = 9692368721520.

The previous prime is 21000132230003. The next prime is 21000132230057. The reversal of 21000132230012 is 21003223100012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201924348314 + ... + 201924348417.

It is an arithmetic number, because the mean of its divisors is an integer number (3298097689978).

Almost surely, 2^{21000132230012} is an apocalyptic number.

It is an amenable number.

21000132230012 is a deficient number, since it is larger than the sum of its proper divisors (18577040049724).

21000132230012 is a wasteful number, since it uses less digits than its factorization.

21000132230012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403848696748 (or 403848696746 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21000132230012 its reverse (21003223100012), we get a palindrome (42003355330024).

The spelling of 21000132230012 in words is "twenty-one trillion, one hundred thirty-two million, two hundred thirty thousand, twelve".