212068638797 has 2 divisors, whose sum is σ = 212068638798. Its totient is φ = 212068638796.

The previous prime is 212068638781. The next prime is 212068638811. The reversal of 212068638797 is 797836860212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160421076676 + 51647562121 = 400526^2 + 227261^2 .

It is a cyclic number.

It is not a de Polignac number, because 212068638797 - 2⁴ = 212068638781 is a prime.

It is a super-2 number, since 2×212068638797² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212068638697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106034319398 + 106034319399.

It is an arithmetic number, because the mean of its divisors is an integer number (106034319399).

Almost surely, 2^212068638797 is an apocalyptic number.

It is an amenable number.

212068638797 is a deficient number, since it is larger than the sum of its proper divisors (1).

212068638797 is an equidigital number, since it uses as much as digits as its factorization.

212068638797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 212068638797 in words is "two hundred twelve billion, sixty-eight million, six hundred thirty-eight thousand, seven hundred ninety-seven".