121133430 has 96 divisors (see below), whose sum is σ = 354751488. Its totient is φ = 28411200.

The previous prime is 121133423. The next prime is 121133471. The reversal of 121133430 is 34331121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28717 + ... + 32663.

It is an arithmetic number, because the mean of its divisors is an integer number (3695328).

Almost surely, 2^121133430 is an apocalyptic number.

121133430 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 121133430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177375744).

121133430 is an abundant number, since it is smaller than the sum of its proper divisors (233618058).

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

121133430 is a wasteful number, since it uses less digits than its factorization.

121133430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002 (or 3999 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 121133430 is about 11006.0633289110. The cubic root of 121133430 is about 494.7904837221.

Adding to 121133430 its reverse (34331121), we get a palindrome (155464551).

The spelling of 121133430 in words is "one hundred twenty-one million, one hundred thirty-three thousand, four hundred thirty".