122028815 has 16 divisors (see below), whose sum is σ = 149450400. Its totient is φ = 95624832.

The previous prime is 122028799. The next prime is 122028821. The reversal of 122028815 is 518820221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122028815 - 2⁴ = 122028799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109481 + ... + 110589.

It is an arithmetic number, because the mean of its divisors is an integer number (9340650).

Almost surely, 2^122028815 is an apocalyptic number.

122028815 is a deficient number, since it is larger than the sum of its proper divisors (27421585).

122028815 is a wasteful number, since it uses less digits than its factorization.

122028815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 122028815 is about 11046.6653339368. The cubic root of 122028815 is about 496.0066105930.

The spelling of 122028815 in words is "one hundred twenty-two million, twenty-eight thousand, eight hundred fifteen".