21002100011202 has 16 divisors (see below), whose sum is σ = 42106899782880. Its totient is φ = 6983583376992.

The previous prime is 21002100011201. The next prime is 21002100011203. The reversal of 21002100011202 is 20211000120012.

It is an interprime number because it is at equal distance from previous prime (21002100011201) and next prime (21002100011203).

It is not an unprimeable number, because it can be changed into a prime (21002100011201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4279154028 + ... + 4279158935.

It is an arithmetic number, because the mean of its divisors is an integer number (2631681236430).

Almost surely, 2^{21002100011202} is an apocalyptic number.

21002100011202 is an abundant number, since it is smaller than the sum of its proper divisors (21104799771678).

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

21002100011202 is a wasteful number, since it uses less digits than its factorization.

21002100011202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8558313377.

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

Adding to 21002100011202 its reverse (20211000120012), we get a palindrome (41213100131214).

The spelling of 21002100011202 in words is "twenty-one trillion, two billion, one hundred million, eleven thousand, two hundred two".