212210521145393 has 2 divisors, whose sum is σ = 212210521145394. Its totient is φ = 212210521145392.

The previous prime is 212210521145387. The next prime is 212210521145443. The reversal of 212210521145393 is 393541125012212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161364608425969 + 50845912719424 = 12702937^2 + 7130632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212210521145393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212210521145393.

It is not a weakly prime, because it can be changed into another prime (212210521145593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105260572696 + 106105260572697.

It is an arithmetic number, because the mean of its divisors is an integer number (106105260572697).

Almost surely, 2^{212210521145393} is an apocalyptic number.

It is an amenable number.

212210521145393 is a deficient number, since it is larger than the sum of its proper divisors (1).

212210521145393 is an equidigital number, since it uses as much as digits as its factorization.

212210521145393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 212210521145393 in words is "two hundred twelve trillion, two hundred ten billion, five hundred twenty-one million, one hundred forty-five thousand, three hundred ninety-three".