212956322377 has 2 divisors, whose sum is σ = 212956322378. Its totient is φ = 212956322376.

The previous prime is 212956322317. The next prime is 212956322399. The reversal of 212956322377 is 773223659212.

212956322377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167560054281 + 45396268096 = 409341^2 + 213064^2 .

It is a cyclic number.

It is not a de Polignac number, because 212956322377 - 2¹¹ = 212956320329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212956322377.

It is not a weakly prime, because it can be changed into another prime (212956322317) 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, 106478161188 + 106478161189.

It is an arithmetic number, because the mean of its divisors is an integer number (106478161189).

Almost surely, 2^212956322377 is an apocalyptic number.

It is an amenable number.

212956322377 is a deficient number, since it is larger than the sum of its proper divisors (1).

212956322377 is an equidigital number, since it uses as much as digits as its factorization.

212956322377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 49.

The spelling of 212956322377 in words is "two hundred twelve billion, nine hundred fifty-six million, three hundred twenty-two thousand, three hundred seventy-seven".