23321010021 has 8 divisors (see below), whose sum is σ = 31681372320. Its totient is φ = 15253993872.

The previous prime is 23321010017. The next prime is 23321010067. The reversal of 23321010021 is 12001012332.

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

It is not a de Polignac number, because 23321010021 - 2² = 23321010017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321010221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73336351 + ... + 73336668.

It is an arithmetic number, because the mean of its divisors is an integer number (3960171540).

Almost surely, 2^23321010021 is an apocalyptic number.

It is an amenable number.

23321010021 is a deficient number, since it is larger than the sum of its proper divisors (8360362299).

23321010021 is a wasteful number, since it uses less digits than its factorization.

23321010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146673075.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 23321010021 its reverse (12001012332), we get a palindrome (35322022353).

The spelling of 23321010021 in words is "twenty-three billion, three hundred twenty-one million, ten thousand, twenty-one".