122811090 has 32 divisors (see below), whose sum is σ = 296303616. Its totient is φ = 32576640.

The previous prime is 122811089. The next prime is 122811107. The reversal of 122811090 is 90118221.

It is a self number, because there is not a number n which added to its sum of digits gives 122811090.

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, 4987 + ... + 16446.

It is an arithmetic number, because the mean of its divisors is an integer number (9259488).

Almost surely, 2^122811090 is an apocalyptic number.

122811090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122811090 is an abundant number, since it is smaller than the sum of its proper divisors (173492526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122811090 is a wasteful number, since it uses less digits than its factorization.

122811090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21634.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 122811090 is about 11082.0165132525. The cubic root of 122811090 is about 497.0642498112.

The spelling of 122811090 in words is "one hundred twenty-two million, eight hundred eleven thousand, ninety".