21100110012201 has 96 divisors (see below), whose sum is σ = 34209244790784. Its totient is φ = 11517434755200.

The previous prime is 21100110012199. The next prime is 21100110012217. The reversal of 21100110012201 is 10221001100112.

It is not a de Polignac number, because 21100110012201 - 2¹ = 21100110012199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100110012251) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8474620 + ... + 10677986.

It is an arithmetic number, because the mean of its divisors is an integer number (356346299904).

Almost surely, 2^{21100110012201} is an apocalyptic number.

It is an amenable number.

21100110012201 is a deficient number, since it is larger than the sum of its proper divisors (13109134778583).

21100110012201 is a wasteful number, since it uses less digits than its factorization.

21100110012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203483 (or 2203472 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21100110012201 its reverse (10221001100112), we get a palindrome (31321111112313).

The spelling of 21100110012201 in words is "twenty-one trillion, one hundred billion, one hundred ten million, twelve thousand, two hundred one".