121112442 has 64 divisors (see below), whose sum is σ = 300827520. Its totient is φ = 35798400.

The previous prime is 121112399. The next prime is 121112449. The reversal of 121112442 is 244211121.

121112442 is a `hidden beast` number, since 1 + 211 + 12 + 442 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (121112449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21868 + ... + 26840.

It is an arithmetic number, because the mean of its divisors is an integer number (4700430).

Almost surely, 2^121112442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121112442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150413760).

121112442 is an abundant number, since it is smaller than the sum of its proper divisors (179715078).

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

121112442 is a wasteful number, since it uses less digits than its factorization.

121112442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5036 (or 5030 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 121112442 is about 11005.1098131732. The cubic root of 121112442 is about 494.7619056974.

Adding to 121112442 its reverse (244211121), we get a palindrome (365323563).

The spelling of 121112442 in words is "one hundred twenty-one million, one hundred twelve thousand, four hundred forty-two".