212813650097 has 2 divisors, whose sum is σ = 212813650098. Its totient is φ = 212813650096.

The previous prime is 212813650033. The next prime is 212813650099. The reversal of 212813650097 is 790056318212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138897090721 + 73916559376 = 372689^2 + 271876^2 .

It is a cyclic number.

It is not a de Polignac number, because 212813650097 - 2⁶ = 212813650033 is a prime.

Together with 212813650099, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212813650099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106406825048 + 106406825049.

It is an arithmetic number, because the mean of its divisors is an integer number (106406825049).

Almost surely, 2^212813650097 is an apocalyptic number.

It is an amenable number.

212813650097 is a deficient number, since it is larger than the sum of its proper divisors (1).

212813650097 is an equidigital number, since it uses as much as digits as its factorization.

212813650097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 212813650097 in words is "two hundred twelve billion, eight hundred thirteen million, six hundred fifty thousand, ninety-seven".