212340110303491 has 2 divisors, whose sum is σ = 212340110303492. Its totient is φ = 212340110303490.

The previous prime is 212340110303473. The next prime is 212340110303543. The reversal of 212340110303491 is 194303011043212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212340110303491 - 2⁵ = 212340110303459 is a prime.

It is not a weakly prime, because it can be changed into another prime (212340110393491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106170055151745 + 106170055151746.

It is an arithmetic number, because the mean of its divisors is an integer number (106170055151746).

Almost surely, 2^{212340110303491} is an apocalyptic number.

212340110303491 is a deficient number, since it is larger than the sum of its proper divisors (1).

212340110303491 is an equidigital number, since it uses as much as digits as its factorization.

212340110303491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 212340110303491 in words is "two hundred twelve trillion, three hundred forty billion, one hundred ten million, three hundred three thousand, four hundred ninety-one".