101112200121021 has 16 divisors (see below), whose sum is σ = 138464482601664. Its totient is φ = 65584144813824.

The previous prime is 101112200120959. The next prime is 101112200121067. The reversal of 101112200121021 is 120121002211101.

It is a happy number.

It is not a de Polignac number, because 101112200121021 - 2²¹ = 101112198023869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101112200121071) 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, 11501475 + ... + 18289568.

It is an arithmetic number, because the mean of its divisors is an integer number (8654030162604).

Almost surely, 2^{101112200121021} is an apocalyptic number.

It is an amenable number.

101112200121021 is a deficient number, since it is larger than the sum of its proper divisors (37352282480643).

101112200121021 is a wasteful number, since it uses less digits than its factorization.

101112200121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29821660.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101112200121021 its reverse (120121002211101), we get a palindrome (221233202332122).

The spelling of 101112200121021 in words is "one hundred one trillion, one hundred twelve billion, two hundred million, one hundred twenty-one thousand, twenty-one".