122722990 has 32 divisors (see below), whose sum is σ = 240589440. Its totient is φ = 44799744.

The previous prime is 122722987. The next prime is 122722997. The reversal of 122722990 is 99227221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122722997) 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, 6267 + ... + 16873.

It is an arithmetic number, because the mean of its divisors is an integer number (7518420).

Almost surely, 2^122722990 is an apocalyptic number.

122722990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122722990 is a deficient number, since it is larger than the sum of its proper divisors (117866450).

122722990 is a wasteful number, since it uses less digits than its factorization.

122722990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10716.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 122722990 is about 11078.0408917823. The cubic root of 122722990 is about 496.9453630559.

The spelling of 122722990 in words is "one hundred twenty-two million, seven hundred twenty-two thousand, nine hundred ninety".