21002021201202 has 64 divisors (see below), whose sum is σ = 44042666803200. Its totient is φ = 6663930420224.

The previous prime is 21002021201173. The next prime is 21002021201207. The reversal of 21002021201202 is 20210212020012.

It is not an unprimeable number, because it can be changed into a prime (21002021201207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23288953 + ... + 24173939.

It is an arithmetic number, because the mean of its divisors is an integer number (688166668800).

Almost surely, 2^{21002021201202} is an apocalyptic number.

21002021201202 is an abundant number, since it is smaller than the sum of its proper divisors (23040645601998).

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

21002021201202 is a wasteful number, since it uses less digits than its factorization.

21002021201202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885847.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21002021201202 its reverse (20210212020012), we get a palindrome (41212233221214).

The spelling of 21002021201202 in words is "twenty-one trillion, two billion, twenty-one million, two hundred one thousand, two hundred two".