21102100201102 has 16 divisors (see below), whose sum is σ = 31962431535840. Its totient is φ = 10447968978432.

The previous prime is 21102100201069. The next prime is 21102100201141. The reversal of 21102100201102 is 20110200120112.

It is a congruent 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, 204774 + ... + 6499702.

It is an arithmetic number, because the mean of its divisors is an integer number (1997651970990).

Almost surely, 2^{21102100201102} is an apocalyptic number.

21102100201102 is a deficient number, since it is larger than the sum of its proper divisors (10860331334738).

21102100201102 is a wasteful number, since it uses less digits than its factorization.

21102100201102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6311307.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21102100201102 its reverse (20110200120112), we get a palindrome (41212300321214).

The spelling of 21102100201102 in words is "twenty-one trillion, one hundred two billion, one hundred million, two hundred one thousand, one hundred two".