122812 has 6 divisors (see below), whose sum is σ = 214928. Its totient is φ = 61404.

The previous prime is 122789. The next prime is 122819. The reversal of 122812 is 218221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122819) by changing a digit.

122812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15348 + ... + 15355.

2¹²²⁸¹² is an apocalyptic number.

It is an amenable number.

122812 is a deficient number, since it is larger than the sum of its proper divisors (92116).

122812 is a wasteful number, since it uses less digits than its factorization.

122812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30707 (or 30705 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 122812 is about 350.4454308448. The cubic root of 122812 is about 49.7065477516.

The spelling of 122812 in words is "one hundred twenty-two thousand, eight hundred twelve".