121420112 has 60 divisors (see below), whose sum is σ = 263212320. Its totient is φ = 54204480.

The previous prime is 121420111. The next prime is 121420121. The reversal of 121420112 is 211024121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121420111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113693 + ... + 114755.

It is an arithmetic number, because the mean of its divisors is an integer number (4386872).

Almost surely, 2^121420112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121420112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131606160).

121420112 is an abundant number, since it is smaller than the sum of its proper divisors (141792208).

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

121420112 is a wasteful number, since it uses less digits than its factorization.

121420112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 121420112 is about 11019.0794533845. The cubic root of 121420112 is about 495.1805102975.

Adding to 121420112 its reverse (211024121), we get a palindrome (332444233).

The spelling of 121420112 in words is "one hundred twenty-one million, four hundred twenty thousand, one hundred twelve".