100010023021 has 4 divisors (see below), whose sum is σ = 100013485500. Its totient is φ = 100006560544.

The previous prime is 100010023019. The next prime is 100010023031. The reversal of 100010023021 is 120320010001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120320010001 = 254119 ⋅473479.

It can be written as a sum of positive squares in 2 ways, for example, as 54096247396 + 45913775625 = 232586^2 + 214275^2 .

It is a cyclic number.

It is not a de Polignac number, because 100010023021 - 2¹ = 100010023019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100010022989 and 100010023007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100010023031) 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, 1687546 + ... + 1745803.

It is an arithmetic number, because the mean of its divisors is an integer number (25003371375).

Almost surely, 2^100010023021 is an apocalyptic number.

It is an amenable number.

100010023021 is a deficient number, since it is larger than the sum of its proper divisors (3462479).

100010023021 is an equidigital number, since it uses as much as digits as its factorization.

100010023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462478.

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

Adding to 100010023021 its reverse (120320010001), we get a palindrome (220330033022).

The spelling of 100010023021 in words is "one hundred billion, ten million, twenty-three thousand, twenty-one".