212320197253 has 2 divisors, whose sum is σ = 212320197254. Its totient is φ = 212320197252.

The previous prime is 212320197241. The next prime is 212320197281. The reversal of 212320197253 is 352791023212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198574510689 + 13745686564 = 445617^2 + 117242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212320197253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212320147253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106160098626 + 106160098627.

It is an arithmetic number, because the mean of its divisors is an integer number (106160098627).

Almost surely, 2^212320197253 is an apocalyptic number.

It is an amenable number.

212320197253 is a deficient number, since it is larger than the sum of its proper divisors (1).

212320197253 is an equidigital number, since it uses as much as digits as its factorization.

212320197253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 212320197253 in words is "two hundred twelve billion, three hundred twenty million, one hundred ninety-seven thousand, two hundred fifty-three".