122155452 has 60 divisors (see below), whose sum is σ = 321256936. Its totient is φ = 40474080.

The previous prime is 122155433. The next prime is 122155457. The reversal of 122155452 is 254551221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122155457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57603 + ... + 59685.

Almost surely, 2^122155452 is an apocalyptic number.

122155452 is a gapful number since it is divisible by the number (12) 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 122155452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160628468).

122155452 is an abundant number, since it is smaller than the sum of its proper divisors (199101484).

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

122155452 is a wasteful number, since it uses less digits than its factorization.

122155452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280 (or 2269 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 122155452 is about 11052.3957583865. The cubic root of 122155452 is about 496.1781303919.

The spelling of 122155452 in words is "one hundred twenty-two million, one hundred fifty-five thousand, four hundred fifty-two".