20221212313277 has 2 divisors, whose sum is σ = 20221212313278. Its totient is φ = 20221212313276.

The previous prime is 20221212313261. The next prime is 20221212313319. The reversal of 20221212313277 is 77231321212202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19881423581881 + 339788731396 = 4458859^2 + 582914^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221212313277 - 2⁴ = 20221212313261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221262313277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110606156638 + 10110606156639.

It is an arithmetic number, because the mean of its divisors is an integer number (10110606156639).

Almost surely, 2^{20221212313277} is an apocalyptic number.

It is an amenable number.

20221212313277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221212313277 is an equidigital number, since it uses as much as digits as its factorization.

20221212313277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

Adding to 20221212313277 its reverse (77231321212202), we get a palindrome (97452533525479).

The spelling of 20221212313277 in words is "twenty trillion, two hundred twenty-one billion, two hundred twelve million, three hundred thirteen thousand, two hundred seventy-seven".