101002120010021 has 4 divisors (see below), whose sum is σ = 106318021063200. Its totient is φ = 95686218956844.

The previous prime is 101002120009877. The next prime is 101002120010039. The reversal of 101002120010021 is 120010021200101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101002120010021 - 2³⁰ = 101001046268197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101002120009984 and 101002120010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101002120012021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2657950526561 + ... + 2657950526598.

It is an arithmetic number, because the mean of its divisors is an integer number (26579505265800).

Almost surely, 2^{101002120010021} is an apocalyptic number.

It is an amenable number.

101002120010021 is a deficient number, since it is larger than the sum of its proper divisors (5315901053179).

101002120010021 is an equidigital number, since it uses as much as digits as its factorization.

101002120010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315901053178.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101002120010021 its reverse (120010021200101), we get a palindrome (221012141210122).

The spelling of 101002120010021 in words is "one hundred one trillion, two billion, one hundred twenty million, ten thousand, twenty-one".