21102222101001 has 12 divisors (see below), whose sum is σ = 29139969008592. Its totient is φ = 13583039511664.

The previous prime is 21102222100997. The next prime is 21102222101003. The reversal of 21102222101001 is 10010122220112.

It is not a de Polignac number, because 21102222101001 - 2² = 21102222100997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21102222101003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4181967771 + ... + 4181972816.

It is an arithmetic number, because the mean of its divisors is an integer number (2428330750716).

Almost surely, 2^{21102222101001} is an apocalyptic number.

It is an amenable number.

21102222101001 is a deficient number, since it is larger than the sum of its proper divisors (8037746907591).

21102222101001 is an equidigital number, since it uses as much as digits as its factorization.

21102222101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8363940648 (or 8363940619 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21102222101001 its reverse (10010122220112), we get a palindrome (31112344321113).

The spelling of 21102222101001 in words is "twenty-one trillion, one hundred two billion, two hundred twenty-two million, one hundred one thousand, one".