121432122 has 80 divisors (see below), whose sum is σ = 329313600. Its totient is φ = 32648832.

The previous prime is 121432117. The next prime is 121432123. The reversal of 121432122 is 221234121.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 121432095 and 121432104.

It is not an unprimeable number, because it can be changed into a prime (121432123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16129 + ... + 22427.

It is an arithmetic number, because the mean of its divisors is an integer number (4116420).

Almost surely, 2^121432122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121432122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164656800).

121432122 is an abundant number, since it is smaller than the sum of its proper divisors (207881478).

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

121432122 is a wasteful number, since it uses less digits than its factorization.

121432122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6337 (or 6328 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 121432122 is about 11019.6244037626. The cubic root of 121432122 is about 495.1968363184.

Adding to 121432122 its reverse (221234121), we get a palindrome (342666243).

The spelling of 121432122 in words is "one hundred twenty-one million, four hundred thirty-two thousand, one hundred twenty-two".