20212312331377 has 2 divisors, whose sum is σ = 20212312331378. Its totient is φ = 20212312331376.

The previous prime is 20212312331359. The next prime is 20212312331389. The reversal of 20212312331377 is 77313321321202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19730511145216 + 481801186161 = 4441904^2 + 694119^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212312331377 - 2³⁵ = 20177952593009 is a prime.

It is a super-2 number, since 2×20212312331377² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20212312331777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106156165688 + 10106156165689.

It is an arithmetic number, because the mean of its divisors is an integer number (10106156165689).

Almost surely, 2^{20212312331377} is an apocalyptic number.

It is an amenable number.

20212312331377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212312331377 is an equidigital number, since it uses as much as digits as its factorization.

20212312331377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 37.

Adding to 20212312331377 its reverse (77313321321202), we get a palindrome (97525633652579).

The spelling of 20212312331377 in words is "twenty trillion, two hundred twelve billion, three hundred twelve million, three hundred thirty-one thousand, three hundred seventy-seven".