23111021220073 has 2 divisors, whose sum is σ = 23111021220074. Its totient is φ = 23111021220072.

The previous prime is 23111021219987. The next prime is 23111021220127. The reversal of 23111021220073 is 37002212011132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21335419664784 + 1775601555289 = 4619028^2 + 1332517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23111021220073 is a prime.

It is not a weakly prime, because it can be changed into another prime (23111021220173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11555510610036 + 11555510610037.

It is an arithmetic number, because the mean of its divisors is an integer number (11555510610037).

Almost surely, 2^{23111021220073} is an apocalyptic number.

It is an amenable number.

23111021220073 is a deficient number, since it is larger than the sum of its proper divisors (1).

23111021220073 is an equidigital number, since it uses as much as digits as its factorization.

23111021220073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The spelling of 23111021220073 in words is "twenty-three trillion, one hundred eleven billion, twenty-one million, two hundred twenty thousand, seventy-three".