23212356770117 has 2 divisors, whose sum is σ = 23212356770118. Its totient is φ = 23212356770116.

The previous prime is 23212356770089. The next prime is 23212356770129. The reversal of 23212356770117 is 71107765321232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12474112760641 + 10738244009476 = 3531871^2 + 3276926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23212356770117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23212356770147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606178385058 + 11606178385059.

It is an arithmetic number, because the mean of its divisors is an integer number (11606178385059).

Almost surely, 2^{23212356770117} is an apocalyptic number.

It is an amenable number.

23212356770117 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212356770117 is an equidigital number, since it uses as much as digits as its factorization.

23212356770117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 23212356770117 in words is "twenty-three trillion, two hundred twelve billion, three hundred fifty-six million, seven hundred seventy thousand, one hundred seventeen".