23021010021 has 8 divisors (see below), whose sum is σ = 30725104960. Its totient is φ = 15332127552.

The previous prime is 23021010013. The next prime is 23021010029. The reversal of 23021010021 is 12001012032.

It is an interprime number because it is at equal distance from previous prime (23021010013) and next prime (23021010029).

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

It is not a de Polignac number, because 23021010021 - 2³ = 23021010013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23021009979 and 23021010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021010029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3799585 + ... + 3805638.

It is an arithmetic number, because the mean of its divisors is an integer number (3840638120).

Almost surely, 2^23021010021 is an apocalyptic number.

It is an amenable number.

23021010021 is a deficient number, since it is larger than the sum of its proper divisors (7704094939).

23021010021 is a wasteful number, since it uses less digits than its factorization.

23021010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606235.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 23021010021 its reverse (12001012032), we get a palindrome (35022022053).

The spelling of 23021010021 in words is "twenty-three billion, twenty-one million, ten thousand, twenty-one".