122155000 has 80 divisors (see below), whose sum is σ = 312368760. Its totient is φ = 44400000.

The previous prime is 122154961. The next prime is 122155027. The reversal of 122155000 is 551221.

It is a super-3 number, since 3×122155000³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 53890 + ... + 56110.

Almost surely, 2^122155000 is an apocalyptic number.

122155000 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 122155000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156184380).

122155000 is an abundant number, since it is smaller than the sum of its proper divisors (190213760).

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

122155000 is a wasteful number, since it uses less digits than its factorization.

122155000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258 (or 2239 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 122155000 is about 11052.3753103123. The cubic root of 122155000 is about 496.1775184045.

The spelling of 122155000 in words is "one hundred twenty-two million, one hundred fifty-five thousand".