212021057593 has 2 divisors, whose sum is σ = 212021057594. Its totient is φ = 212021057592.

The previous prime is 212021057519. The next prime is 212021057621. The reversal of 212021057593 is 395750120212.

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., 142571942569 + 69449115024 = 377587^2 + 263532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021057593 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021357593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010528796 + 106010528797.

It is an arithmetic number, because the mean of its divisors is an integer number (106010528797).

Almost surely, 2^212021057593 is an apocalyptic number.

It is an amenable number.

212021057593 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021057593 is an equidigital number, since it uses as much as digits as its factorization.

212021057593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 212021057593 in words is "two hundred twelve billion, twenty-one million, fifty-seven thousand, five hundred ninety-three".