101030020021 has 8 divisors (see below), whose sum is σ = 117044563904. Its totient is φ = 85410897120.

The previous prime is 101030020019. The next prime is 101030020033. The reversal of 101030020021 is 120020030101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101030020021 - 2¹ = 101030020019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101030020051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98854695 + ... + 98855716.

It is an arithmetic number, because the mean of its divisors is an integer number (14630570488).

Almost surely, 2^101030020021 is an apocalyptic number.

It is an amenable number.

101030020021 is a deficient number, since it is larger than the sum of its proper divisors (16014543883).

101030020021 is an equidigital number, since it uses as much as digits as its factorization.

101030020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197710491.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 101030020021 its reverse (120020030101), we get a palindrome (221050050122).

The spelling of 101030020021 in words is "one hundred one billion, thirty million, twenty thousand, twenty-one".