121100430 has 96 divisors (see below), whose sum is σ = 324549792. Its totient is φ = 28892160.

The previous prime is 121100411. The next prime is 121100437. The reversal of 121100430 is 34001121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 264762 + ... + 265218.

It is an arithmetic number, because the mean of its divisors is an integer number (3380727).

Almost surely, 2^121100430 is an apocalyptic number.

121100430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121100430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162274896).

121100430 is an abundant number, since it is smaller than the sum of its proper divisors (203449362).

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

121100430 is a wasteful number, since it uses less digits than its factorization.

121100430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 121100430 is about 11004.5640531554. The cubic root of 121100430 is about 494.7455482354.

Adding to 121100430 its reverse (34001121), we get a palindrome (155101551).

The spelling of 121100430 in words is "one hundred twenty-one million, one hundred thousand, four hundred thirty".