212119949857 has 2 divisors, whose sum is σ = 212119949858. Its totient is φ = 212119949856.

The previous prime is 212119949849. The next prime is 212119949911. The reversal of 212119949857 is 758949911212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174409805376 + 37710144481 = 417624^2 + 194191^2 .

It is a cyclic number.

It is not a de Polignac number, because 212119949857 - 2³ = 212119949849 is a prime.

It is not a weakly prime, because it can be changed into another prime (212119949057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106059974928 + 106059974929.

It is an arithmetic number, because the mean of its divisors is an integer number (106059974929).

Almost surely, 2^212119949857 is an apocalyptic number.

It is an amenable number.

212119949857 is a deficient number, since it is larger than the sum of its proper divisors (1).

212119949857 is an equidigital number, since it uses as much as digits as its factorization.

212119949857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 58.

The spelling of 212119949857 in words is "two hundred twelve billion, one hundred nineteen million, nine hundred forty-nine thousand, eight hundred fifty-seven".