101000010012021 has 24 divisors (see below), whose sum is σ = 146058715333440. Its totient is φ = 67254990580800.

The previous prime is 101000010012017. The next prime is 101000010012023. The reversal of 101000010012021 is 120210010000101.

It is a happy number.

It is not a de Polignac number, because 101000010012021 - 2² = 101000010012017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 101000010011994 and 101000010012012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101000010012023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46929225 + ... + 49034193.

It is an arithmetic number, because the mean of its divisors is an integer number (6085779805560).

Almost surely, 2^{101000010012021} is an apocalyptic number.

It is an amenable number.

101000010012021 is a deficient number, since it is larger than the sum of its proper divisors (45058705321419).

101000010012021 is a wasteful number, since it uses less digits than its factorization.

101000010012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111177 (or 2111174 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101000010012021 its reverse (120210010000101), we get a palindrome (221210020012122).

The spelling of 101000010012021 in words is "one hundred one trillion, ten million, twelve thousand, twenty-one".