21102110201201 has 8 divisors (see below), whose sum is σ = 21106312341408. Its totient is φ = 21097908412000.

The previous prime is 21102110201191. The next prime is 21102110201203. The reversal of 21102110201201 is 10210201120112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21102110201201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102110201203) 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, 142420166 + ... + 142568256.

It is an arithmetic number, because the mean of its divisors is an integer number (2638289042676).

Almost surely, 2^{21102110201201} is an apocalyptic number.

It is an amenable number.

21102110201201 is a deficient number, since it is larger than the sum of its proper divisors (4202140207).

21102110201201 is a wasteful number, since it uses less digits than its factorization.

21102110201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175503.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21102110201201 its reverse (10210201120112), we get a palindrome (31312311321313).

The spelling of 21102110201201 in words is "twenty-one trillion, one hundred two billion, one hundred ten million, two hundred one thousand, two hundred one".