23221312277 has 2 divisors, whose sum is σ = 23221312278. Its totient is φ = 23221312276.

The previous prime is 23221312273. The next prime is 23221312319. The reversal of 23221312277 is 77221312232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12635783281 + 10585528996 = 112409^2 + 102886^2 .

It is a cyclic number.

It is not a de Polignac number, because 23221312277 - 2² = 23221312273 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23221312273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610656138 + 11610656139.

It is an arithmetic number, because the mean of its divisors is an integer number (11610656139).

Almost surely, 2^23221312277 is an apocalyptic number.

It is an amenable number.

23221312277 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221312277 is an equidigital number, since it uses as much as digits as its factorization.

23221312277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 32.

The spelling of 23221312277 in words is "twenty-three billion, two hundred twenty-one million, three hundred twelve thousand, two hundred seventy-seven".