21102112120201 has 8 divisors (see below), whose sum is σ = 25535328952320. Its totient is φ = 17023552634688.

The previous prime is 21102112120189. The next prime is 21102112120213. The reversal of 21102112120201 is 10202121120112.

It is an interprime number because it is at equal distance from previous prime (21102112120189) and next prime (21102112120213).

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

It is a cyclic number.

It is not a de Polignac number, because 21102112120201 - 2⁷ = 21102112120073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102112121201) 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, 88664336521 + ... + 88664336758.

It is an arithmetic number, because the mean of its divisors is an integer number (3191916119040).

Almost surely, 2^{21102112120201} is an apocalyptic number.

It is an amenable number.

21102112120201 is a deficient number, since it is larger than the sum of its proper divisors (4433216832119).

21102112120201 is a wasteful number, since it uses less digits than its factorization.

21102112120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177328673303.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21102112120201 its reverse (10202121120112), we get a palindrome (31304233240313).

The spelling of 21102112120201 in words is "twenty-one trillion, one hundred two billion, one hundred twelve million, one hundred twenty thousand, two hundred one".