212435252191 has 2 divisors, whose sum is σ = 212435252192. Its totient is φ = 212435252190.

The previous prime is 212435252189. The next prime is 212435252233. The reversal of 212435252191 is 191252534212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212435252191 - 2¹ = 212435252189 is a prime.

Together with 212435252189, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212435252191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212435252171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106217626095 + 106217626096.

It is an arithmetic number, because the mean of its divisors is an integer number (106217626096).

Almost surely, 2^212435252191 is an apocalyptic number.

212435252191 is a deficient number, since it is larger than the sum of its proper divisors (1).

212435252191 is an equidigital number, since it uses as much as digits as its factorization.

212435252191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 37.

The spelling of 212435252191 in words is "two hundred twelve billion, four hundred thirty-five million, two hundred fifty-two thousand, one hundred ninety-one".