213102120031291 has 2 divisors, whose sum is σ = 213102120031292. Its totient is φ = 213102120031290.

The previous prime is 213102120031279. The next prime is 213102120031319. The reversal of 213102120031291 is 192130021201312.

It is an a-pointer prime, because the next prime (213102120031319) can be obtained adding 213102120031291 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213102120031291 - 2⁵ = 213102120031259 is a prime.

It is not a weakly prime, because it can be changed into another prime (213102120031201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106551060015645 + 106551060015646.

It is an arithmetic number, because the mean of its divisors is an integer number (106551060015646).

Almost surely, 2^{213102120031291} is an apocalyptic number.

213102120031291 is a deficient number, since it is larger than the sum of its proper divisors (1).

213102120031291 is an equidigital number, since it uses as much as digits as its factorization.

213102120031291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 213102120031291 in words is "two hundred thirteen trillion, one hundred two billion, one hundred twenty million, thirty-one thousand, two hundred ninety-one".