23023012421 has 2 divisors, whose sum is σ = 23023012422. Its totient is φ = 23023012420.

The previous prime is 23023012409. The next prime is 23023012459. The reversal of 23023012421 is 12421032032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22973464900 + 49547521 = 151570^2 + 7039^2 .

It is a cyclic number.

It is not a de Polignac number, because 23023012421 - 2¹⁴ = 23022996037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23023012393 and 23023012402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23023012471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11511506210 + 11511506211.

It is an arithmetic number, because the mean of its divisors is an integer number (11511506211).

Almost surely, 2^23023012421 is an apocalyptic number.

It is an amenable number.

23023012421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23023012421 is an equidigital number, since it uses as much as digits as its factorization.

23023012421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23023012421 its reverse (12421032032), we get a palindrome (35444044453).

The spelling of 23023012421 in words is "twenty-three billion, twenty-three million, twelve thousand, four hundred twenty-one".