21202100021202 has 16 divisors (see below), whose sum is σ = 43122915298080. Its totient is φ = 6947580797792.

The previous prime is 21202100021117. The next prime is 21202100021239. The reversal of 21202100021202 is 20212000120212.

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, 29946468603 + ... + 29946469310.

It is an arithmetic number, because the mean of its divisors is an integer number (2695182206130).

Almost surely, 2^{21202100021202} is an apocalyptic number.

21202100021202 is an abundant number, since it is smaller than the sum of its proper divisors (21920815276878).

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

21202100021202 is a wasteful number, since it uses less digits than its factorization.

21202100021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59892937977.

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

Adding to 21202100021202 its reverse (20212000120212), we get a palindrome (41414100141414).

The spelling of 21202100021202 in words is "twenty-one trillion, two hundred two billion, one hundred million, twenty-one thousand, two hundred two".