101200121221021 has 16 divisors (see below), whose sum is σ = 106255280880000. Its totient is φ = 96249409679808.

The previous prime is 101200121220977. The next prime is 101200121221061. The reversal of 101200121221021 is 120122121002101.

It is a cyclic number.

It is not a de Polignac number, because 101200121221021 - 2²⁵ = 101200087666589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101200121220986 and 101200121221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101200121221061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70694656 + ... + 72111958.

It is an arithmetic number, because the mean of its divisors is an integer number (6640955055000).

Almost surely, 2^{101200121221021} is an apocalyptic number.

It is an amenable number.

101200121221021 is a deficient number, since it is larger than the sum of its proper divisors (5055159658979).

101200121221021 is a wasteful number, since it uses less digits than its factorization.

101200121221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454148.

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

Adding to 101200121221021 its reverse (120122121002101), we get a palindrome (221322242223122).

The spelling of 101200121221021 in words is "one hundred one trillion, two hundred billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty-one".