101121100122021 has 16 divisors (see below), whose sum is σ = 154094292659328. Its totient is φ = 57781611820800.

The previous prime is 101121100122001. The next prime is 101121100122047. The reversal of 101121100122021 is 120221001121101.

It is a happy number.

It is not a de Polignac number, because 101121100122021 - 2¹⁸ = 101121099859877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121100122001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77418720 + ... + 78714041.

It is an arithmetic number, because the mean of its divisors is an integer number (9630893291208).

Almost surely, 2^{101121100122021} is an apocalyptic number.

It is an amenable number.

101121100122021 is a deficient number, since it is larger than the sum of its proper divisors (52973192537307).

101121100122021 is a wasteful number, since it uses less digits than its factorization.

101121100122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156163612.

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

Adding to 101121100122021 its reverse (120221001121101), we get a palindrome (221342101243122).

The spelling of 101121100122021 in words is "one hundred one trillion, one hundred twenty-one billion, one hundred million, one hundred twenty-two thousand, twenty-one".