121333420 has 96 divisors (see below), whose sum is σ = 294573888. Its totient is φ = 41582592.

The previous prime is 121333417. The next prime is 121333423. The reversal of 121333420 is 24333121.

It is an interprime number because it is at equal distance from previous prime (121333417) and next prime (121333423).

It is not an unprimeable number, because it can be changed into a prime (121333423) 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, 428599 + ... + 428881.

It is an arithmetic number, because the mean of its divisors is an integer number (3068478).

Almost surely, 2^121333420 is an apocalyptic number.

121333420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121333420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147286944).

121333420 is an abundant number, since it is smaller than the sum of its proper divisors (173240468).

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

121333420 is a wasteful number, since it uses less digits than its factorization.

121333420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 121333420 is about 11015.1450285505. The cubic root of 121333420 is about 495.0626319416.

Adding to 121333420 its reverse (24333121), we get a palindrome (145666541).

The spelling of 121333420 in words is "one hundred twenty-one million, three hundred thirty-three thousand, four hundred twenty".