20223754621 has 16 divisors (see below), whose sum is σ = 24301837440. Its totient is φ = 16462514880.

The previous prime is 20223754613. The next prime is 20223754643. The reversal of 20223754621 is 12645732202.

It is not a de Polignac number, because 20223754621 - 2³ = 20223754613 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 (20223754601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804211 + ... + 828976.

It is an arithmetic number, because the mean of its divisors is an integer number (1518864840).

Almost surely, 2^20223754621 is an apocalyptic number.

It is an amenable number.

20223754621 is a deficient number, since it is larger than the sum of its proper divisors (4078082819).

20223754621 is a wasteful number, since it uses less digits than its factorization.

20223754621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633284.

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 20223754621 in words is "twenty billion, two hundred twenty-three million, seven hundred fifty-four thousand, six hundred twenty-one".