23021023217 has 2 divisors, whose sum is σ = 23021023218. Its totient is φ = 23021023216.

The previous prime is 23021023183. The next prime is 23021023241. The reversal of 23021023217 is 71232012032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19096752481 + 3924270736 = 138191^2 + 62644^2 .

It is a cyclic number.

It is not a de Polignac number, because 23021023217 - 2²⁶ = 22953914353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23021023192 and 23021023201.

It is not a weakly prime, because it can be changed into another prime (23021025217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510511608 + 11510511609.

It is an arithmetic number, because the mean of its divisors is an integer number (11510511609).

Almost surely, 2^23021023217 is an apocalyptic number.

It is an amenable number.

23021023217 is a deficient number, since it is larger than the sum of its proper divisors (1).

23021023217 is an equidigital number, since it uses as much as digits as its factorization.

23021023217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

Adding to 23021023217 its reverse (71232012032), we get a palindrome (94253035249).

The spelling of 23021023217 in words is "twenty-three billion, twenty-one million, twenty-three thousand, two hundred seventeen".