23200020421 has 16 divisors (see below), whose sum is σ = 23663743488. Its totient is φ = 22740480000.

The previous prime is 23200020419. The next prime is 23200020463. The reversal of 23200020421 is 12402000232.

It is a cyclic number.

It is not a de Polignac number, because 23200020421 - 2¹ = 23200020419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23200020395 and 23200020404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23200020491) 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 15 ways as a sum of consecutive naturals, for example, 13702651 + ... + 13704343.

It is an arithmetic number, because the mean of its divisors is an integer number (1478983968).

Almost surely, 2^23200020421 is an apocalyptic number.

It is an amenable number.

23200020421 is a deficient number, since it is larger than the sum of its proper divisors (463723067).

23200020421 is a wasteful number, since it uses less digits than its factorization.

23200020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 23200020421 its reverse (12402000232), we get a palindrome (35602020653).

The spelling of 23200020421 in words is "twenty-three billion, two hundred million, twenty thousand, four hundred twenty-one".