21213433020004 has 48 divisors (see below), whose sum is σ = 38019343824000. Its totient is φ = 10351189126656.

The previous prime is 21213433019983. The next prime is 21213433020007. The reversal of 21213433020004 is 40002033431212.

It is not an unprimeable number, because it can be changed into a prime (21213433020007) 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, 1329237777 + ... + 1329253735.

It is an arithmetic number, because the mean of its divisors is an integer number (792069663000).

Almost surely, 2^{21213433020004} is an apocalyptic number.

It is an amenable number.

21213433020004 is a deficient number, since it is larger than the sum of its proper divisors (16805910803996).

21213433020004 is a wasteful number, since it uses less digits than its factorization.

21213433020004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22132 (or 22130 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21213433020004 its reverse (40002033431212), we get a palindrome (61215466451216).

The spelling of 21213433020004 in words is "twenty-one trillion, two hundred thirteen billion, four hundred thirty-three million, twenty thousand, four".