122251500 has 144 divisors (see below), whose sum is σ = 440870976. Its totient is φ = 27936000.

The previous prime is 122251489. The next prime is 122251517. The reversal of 122251500 is 5152221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29560 + ... + 33440.

It is an arithmetic number, because the mean of its divisors is an integer number (3061604).

Almost surely, 2^122251500 is an apocalyptic number.

122251500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122251500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220435488).

122251500 is an abundant number, since it is smaller than the sum of its proper divisors (318619476).

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

122251500 is a wasteful number, since it uses less digits than its factorization.

122251500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913 (or 3898 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 122251500 is about 11056.7400258847. The cubic root of 122251500 is about 496.3081407768.

The spelling of 122251500 in words is "one hundred twenty-two million, two hundred fifty-one thousand, five hundred".