121413220 has 48 divisors (see below), whose sum is σ = 261999360. Its totient is φ = 47239424.

The previous prime is 121413203. The next prime is 121413233. The reversal of 121413220 is 22314121.

It is a junction number, because it is equal to n+sod(n) for n = 121413194 and 121413203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213096 + ... + 213664.

It is an arithmetic number, because the mean of its divisors is an integer number (5458320).

Almost surely, 2^121413220 is an apocalyptic number.

121413220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121413220 is an abundant number, since it is smaller than the sum of its proper divisors (140586140).

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

121413220 is a wasteful number, since it uses less digits than its factorization.

121413220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121413220 is about 11018.7667186487. The cubic root of 121413220 is about 495.1711410406.

Adding to 121413220 its reverse (22314121), we get a palindrome (143727341).

Subtracting from 121413220 its reverse (22314121), we obtain a palindrome (99099099).

The spelling of 121413220 in words is "one hundred twenty-one million, four hundred thirteen thousand, two hundred twenty".