21033100564412 has 12 divisors (see below), whose sum is σ = 36869996693376. Its totient is φ = 10498815794880.

The previous prime is 21033100564391. The next prime is 21033100564417. The reversal of 21033100564412 is 21446500133012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033100564417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4433619164 + ... + 4433623907.

It is an arithmetic number, because the mean of its divisors is an integer number (3072499724448).

Almost surely, 2^{21033100564412} is an apocalyptic number.

It is an amenable number.

21033100564412 is a deficient number, since it is larger than the sum of its proper divisors (15836896128964).

21033100564412 is a wasteful number, since it uses less digits than its factorization.

21033100564412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8867243668 (or 8867243666 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 21033100564412 its reverse (21446500133012), we get a palindrome (42479600697424).

The spelling of 21033100564412 in words is "twenty-one trillion, thirty-three billion, one hundred million, five hundred sixty-four thousand, four hundred twelve".