23002661221 has 8 divisors (see below), whose sum is σ = 23247469944. Its totient is φ = 22758187200.

The previous prime is 23002661203. The next prime is 23002661237. The reversal of 23002661221 is 12216620032.

It can be written as a sum of positive squares in 4 ways, for example, as 18876012100 + 4126649121 = 137390^2 + 64239^2 .

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 23002661221 - 2⁷ = 23002661093 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 (23002661621) 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, 55735 + ... + 221611.

It is an arithmetic number, because the mean of its divisors is an integer number (2905933743).

Almost surely, 2^23002661221 is an apocalyptic number.

It is an amenable number.

23002661221 is a deficient number, since it is larger than the sum of its proper divisors (244808723).

23002661221 is a wasteful number, since it uses less digits than its factorization.

23002661221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167351.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 23002661221 in words is "twenty-three billion, two million, six hundred sixty-one thousand, two hundred twenty-one".