205122166612 has 48 divisors (see below), whose sum is σ = 392508063360. Its totient is φ = 93020681600.

The previous prime is 205122166607. The next prime is 205122166631. The reversal of 205122166612 is 216661221502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39165258 + ... + 39170494.

It is an arithmetic number, because the mean of its divisors is an integer number (8177251320).

Almost surely, 2^205122166612 is an apocalyptic number.

205122166612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

205122166612 is a deficient number, since it is larger than the sum of its proper divisors (187385896748).

205122166612 is a wasteful number, since it uses less digits than its factorization.

205122166612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152 (or 7150 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 205122166612 in words is "two hundred five billion, one hundred twenty-two million, one hundred sixty-six thousand, six hundred twelve".