213111302039197 has 2 divisors, whose sum is σ = 213111302039198. Its totient is φ = 213111302039196.

The previous prime is 213111302039189. The next prime is 213111302039221. The reversal of 213111302039197 is 791930203111312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190740019669956 + 22371282369241 = 13810866^2 + 4729829^2 .

It is a cyclic number.

It is not a de Polignac number, because 213111302039197 - 2³ = 213111302039189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213111302030197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555651019598 + 106555651019599.

It is an arithmetic number, because the mean of its divisors is an integer number (106555651019599).

Almost surely, 2^{213111302039197} is an apocalyptic number.

It is an amenable number.

213111302039197 is a deficient number, since it is larger than the sum of its proper divisors (1).

213111302039197 is an equidigital number, since it uses as much as digits as its factorization.

213111302039197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 43.

The spelling of 213111302039197 in words is "two hundred thirteen trillion, one hundred eleven billion, three hundred two million, thirty-nine thousand, one hundred ninety-seven".