21200010122101 has 8 divisors (see below), whose sum is σ = 21238503326208. Its totient is φ = 21161549640000.

The previous prime is 21200010122087. The next prime is 21200010122117. The reversal of 21200010122101 is 10122101000212.

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 21200010122101 - 2²⁹ = 21199473251189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200010122701) 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, 6883375 + ... + 9475276.

It is an arithmetic number, because the mean of its divisors is an integer number (2654812915776).

Almost surely, 2^{21200010122101} is an apocalyptic number.

It is an amenable number.

21200010122101 is a deficient number, since it is larger than the sum of its proper divisors (38493204107).

21200010122101 is a wasteful number, since it uses less digits than its factorization.

21200010122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16361003.

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

Adding to 21200010122101 its reverse (10122101000212), we get a palindrome (31322111122313).

The spelling of 21200010122101 in words is "twenty-one trillion, two hundred billion, ten million, one hundred twenty-two thousand, one hundred one".