122152290 has 32 divisors (see below), whose sum is σ = 315717696. Its totient is φ = 30068160.

The previous prime is 122152271. The next prime is 122152297. The reversal of 122152290 is 92251221.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122152290.

It is not an unprimeable number, because it can be changed into a prime (122152297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156216 + ... + 156995.

It is an arithmetic number, because the mean of its divisors is an integer number (9866178).

Almost surely, 2^122152290 is an apocalyptic number.

122152290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122152290 is an abundant number, since it is smaller than the sum of its proper divisors (193565406).

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

122152290 is a wasteful number, since it uses less digits than its factorization.

122152290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313234.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 122152290 is about 11052.2527115516. The cubic root of 122152290 is about 496.1738491563.

The spelling of 122152290 in words is "one hundred twenty-two million, one hundred fifty-two thousand, two hundred ninety".