66212119 has 2 divisors, whose sum is σ = 66212120. Its totient is φ = 66212118.

The previous prime is 66212087. The next prime is 66212137. The reversal of 66212119 is 91121266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66212119 - 2⁵ = 66212087 is a prime.

It is a super-2 number, since 2×66212119² = 8768089404940322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66212149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33106059 + 33106060.

It is an arithmetic number, because the mean of its divisors is an integer number (33106060).

Almost surely, 2^66212119 is an apocalyptic number.

66212119 is a deficient number, since it is larger than the sum of its proper divisors (1).

66212119 is an equidigital number, since it uses as much as digits as its factorization.

66212119 is an evil number, because the sum of its binary digits is even.

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

The square root of 66212119 is about 8137.0829539830. The cubic root of 66212119 is about 404.5564803841.

The spelling of 66212119 in words is "sixty-six million, two hundred twelve thousand, one hundred nineteen".