23220121221139 has 2 divisors, whose sum is σ = 23220121221140. Its totient is φ = 23220121221138.

The previous prime is 23220121221137. The next prime is 23220121221151. The reversal of 23220121221139 is 93112212102232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23220121221139 - 2¹ = 23220121221137 is a prime.

Together with 23220121221137, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23220121221139.

It is not a weakly prime, because it can be changed into another prime (23220121221133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610060610569 + 11610060610570.

It is an arithmetic number, because the mean of its divisors is an integer number (11610060610570).

Almost surely, 2^{23220121221139} is an apocalyptic number.

23220121221139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23220121221139 is an equidigital number, since it uses as much as digits as its factorization.

23220121221139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 23220121221139 in words is "twenty-three trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred thirty-nine".