122171140 has 96 divisors (see below), whose sum is σ = 332478720. Its totient is φ = 36619776.

The previous prime is 122171117. The next prime is 122171141. The reversal of 122171140 is 41171221.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (122171141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32814 + ... + 36346.

It is an arithmetic number, because the mean of its divisors is an integer number (3463320).

Almost surely, 2^122171140 is an apocalyptic number.

122171140 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 122171140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166239360).

122171140 is an abundant number, since it is smaller than the sum of its proper divisors (210307580).

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

122171140 is a wasteful number, since it uses less digits than its factorization.

122171140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581 (or 3579 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 122171140 is about 11053.1054459821. The cubic root of 122171140 is about 496.1993702934.

It can be divided in two parts, 1221 and 71140, that added together give a square (72361 = 269²).

The spelling of 122171140 in words is "one hundred twenty-two million, one hundred seventy-one thousand, one hundred forty".