212616091 has 2 divisors, whose sum is σ = 212616092. Its totient is φ = 212616090.

The previous prime is 212616067. The next prime is 212616101. The reversal of 212616091 is 190616212.

212616091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212616091 - 2¹⁵ = 212583323 is a prime.

It is not a weakly prime, because it can be changed into another prime (212616491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106308045 + 106308046.

It is an arithmetic number, because the mean of its divisors is an integer number (106308046).

Almost surely, 2^212616091 is an apocalyptic number.

212616091 is a deficient number, since it is larger than the sum of its proper divisors (1).

212616091 is an equidigital number, since it uses as much as digits as its factorization.

212616091 is an evil number, because the sum of its binary digits is even.

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

The square root of 212616091 is about 14581.3610818744. The cubic root of 212616091 is about 596.8502449315.

The spelling of 212616091 in words is "two hundred twelve million, six hundred sixteen thousand, ninety-one".