21001010021202 has 16 divisors (see below), whose sum is σ = 42003316270080. Its totient is φ = 7000120635792.

The previous prime is 21001010021161. The next prime is 21001010021213. The reversal of 21001010021202 is 20212001010012.

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, 53798802 + ... + 54187757.

It is an arithmetic number, because the mean of its divisors is an integer number (2625207266880).

Almost surely, 2^{21001010021202} is an apocalyptic number.

21001010021202 is an abundant number, since it is smaller than the sum of its proper divisors (21002306248878).

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

21001010021202 is a wasteful number, since it uses less digits than its factorization.

21001010021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108018977.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21001010021202 its reverse (20212001010012), we get a palindrome (41213011031214).

The spelling of 21001010021202 in words is "twenty-one trillion, one billion, ten million, twenty-one thousand, two hundred two".