10100230021 has 4 divisors (see below), whose sum is σ = 11543120032. Its totient is φ = 8657340012.

The previous prime is 10100230003. The next prime is 10100230039. The reversal of 10100230021 is 12003200101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12003200101 = 1523 ⋅7881287.

It is an interprime number because it is at equal distance from previous prime (10100230003) and next prime (10100230039).

It is a cyclic number.

It is not a de Polignac number, because 10100230021 - 2⁹ = 10100229509 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 (10100230081) 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, 721444995 + ... + 721445008.

It is an arithmetic number, because the mean of its divisors is an integer number (2885780008).

Almost surely, 2^10100230021 is an apocalyptic number.

It is an amenable number.

10100230021 is a deficient number, since it is larger than the sum of its proper divisors (1442890011).

10100230021 is an equidigital number, since it uses as much as digits as its factorization.

10100230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442890010.

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

Adding to 10100230021 its reverse (12003200101), we get a palindrome (22103430122).

The spelling of 10100230021 in words is "ten billion, one hundred million, two hundred thirty thousand, twenty-one".