212603144774869 has 2 divisors, whose sum is σ = 212603144774870. Its totient is φ = 212603144774868.

The previous prime is 212603144774831. The next prime is 212603144775011. The reversal of 212603144774869 is 968477441306212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209277828407844 + 3325316367025 = 14466438^2 + 1823545^2 .

It is a cyclic number.

It is not a de Polignac number, because 212603144774869 - 2³⁵ = 212568785036501 is a prime.

It is a super-2 number, since 2×212603144774869² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212603144774869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212603145774869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106301572387434 + 106301572387435.

It is an arithmetic number, because the mean of its divisors is an integer number (106301572387435).

Almost surely, 2^{212603144774869} is an apocalyptic number.

It is an amenable number.

212603144774869 is a deficient number, since it is larger than the sum of its proper divisors (1).

212603144774869 is an equidigital number, since it uses as much as digits as its factorization.

212603144774869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97542144, while the sum is 64.

The spelling of 212603144774869 in words is "two hundred twelve trillion, six hundred three billion, one hundred forty-four million, seven hundred seventy-four thousand, eight hundred sixty-nine".