121410220 has 24 divisors (see below), whose sum is σ = 257441184. Its totient is φ = 48091776.

The previous prime is 121410217. The next prime is 121410221. The reversal of 121410220 is 22014121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121410220.

It is not an unprimeable number, because it can be changed into a prime (121410221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27409 + ... + 31528.

It is an arithmetic number, because the mean of its divisors is an integer number (10726716).

Almost surely, 2^121410220 is an apocalyptic number.

121410220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121410220 is an abundant number, since it is smaller than the sum of its proper divisors (136030964).

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

121410220 is a wasteful number, since it uses less digits than its factorization.

121410220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59049 (or 59047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121410220 is about 11018.6305864204. The cubic root of 121410220 is about 495.1670626115.

Adding to 121410220 its reverse (22014121), we get a palindrome (143424341).

The spelling of 121410220 in words is "one hundred twenty-one million, four hundred ten thousand, two hundred twenty".