21213020332302 has 32 divisors (see below), whose sum is σ = 43573085896992. Its totient is φ = 6879836041344.

The previous prime is 21213020332279. The next prime is 21213020332321. The reversal of 21213020332302 is 20323302031212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28383888 + ... + 29121660.

It is an arithmetic number, because the mean of its divisors is an integer number (1361658934281).

Almost surely, 2^{21213020332302} is an apocalyptic number.

21213020332302 is an abundant number, since it is smaller than the sum of its proper divisors (22360065564690).

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

21213020332302 is a wasteful number, since it uses less digits than its factorization.

21213020332302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867332.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21213020332302 its reverse (20323302031212), we get a palindrome (41536322363514).

The spelling of 21213020332302 in words is "twenty-one trillion, two hundred thirteen billion, twenty million, three hundred thirty-two thousand, three hundred two".