212303232091 has 2 divisors, whose sum is σ = 212303232092. Its totient is φ = 212303232090.

The previous prime is 212303232079. The next prime is 212303232109. The reversal of 212303232091 is 190232303212.

212303232091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (212303232109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212303232091 - 2⁵ = 212303232059 is a prime.

It is not a weakly prime, because it can be changed into another prime (212303232041) 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, 106151616045 + 106151616046.

It is an arithmetic number, because the mean of its divisors is an integer number (106151616046).

Almost surely, 2^212303232091 is an apocalyptic number.

212303232091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212303232091 is an equidigital number, since it uses as much as digits as its factorization.

212303232091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

It can be divided in two parts, 212 and 303232091, that added together give a palindrome (303232303).

The spelling of 212303232091 in words is "two hundred twelve billion, three hundred three million, two hundred thirty-two thousand, ninety-one".