100101010021 has 8 divisors (see below), whose sum is σ = 104627041344. Its totient is φ = 95589463200.

The previous prime is 100101010013. The next prime is 100101010033. The reversal of 100101010021 is 120010101001.

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 100101010021 - 2³ = 100101010013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100101009986 and 100101010013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101010421) 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, 3606991 + ... + 3634636.

It is an arithmetic number, because the mean of its divisors is an integer number (13078380168).

Almost surely, 2^100101010021 is an apocalyptic number.

It is an amenable number.

100101010021 is a deficient number, since it is larger than the sum of its proper divisors (4526031323).

100101010021 is an equidigital number, since it uses as much as digits as its factorization.

100101010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7242251.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 100101010021 its reverse (120010101001), we get a palindrome (220111111022).

The spelling of 100101010021 in words is "one hundred billion, one hundred one million, ten thousand, twenty-one".