21002321202 has 16 divisors (see below), whose sum is σ = 42007406112. Its totient is φ = 7000313120.

The previous prime is 21002321141. The next prime is 21002321239. The reversal of 21002321202 is 20212320012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8808 + ... + 205139.

It is an arithmetic number, because the mean of its divisors is an integer number (2625462882).

Almost surely, 2^21002321202 is an apocalyptic number.

21002321202 is an abundant number, since it is smaller than the sum of its proper divisors (21005084910).

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

21002321202 is a wasteful number, since it uses less digits than its factorization.

21002321202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230313.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21002321202 its reverse (20212320012), we get a palindrome (41214641214).

The spelling of 21002321202 in words is "twenty-one billion, two million, three hundred twenty-one thousand, two hundred two".