21990303023 has 8 divisors (see below), whose sum is σ = 23692626048. Its totient is φ = 20289517344.

The previous prime is 21990303001. The next prime is 21990303053. The reversal of 21990303023 is 32030309912.

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 21990303023 - 2¹² = 21990298927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21990303053) 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, 354536 + ... + 411917.

It is an arithmetic number, because the mean of its divisors is an integer number (2961578256).

Almost surely, 2^21990303023 is an apocalyptic number.

21990303023 is a deficient number, since it is larger than the sum of its proper divisors (1702323025).

21990303023 is a wasteful number, since it uses less digits than its factorization.

21990303023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768673.

The product of its (nonzero) digits is 8748, while the sum is 32.

The spelling of 21990303023 in words is "twenty-one billion, nine hundred ninety million, three hundred three thousand, twenty-three".