121514220 has 36 divisors (see below), whose sum is σ = 368593680. Its totient is φ = 32403744.

The previous prime is 121514219. The next prime is 121514233. The reversal of 121514220 is 22415121.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 121514193 and 121514202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337360 + ... + 337719.

Almost surely, 2^121514220 is an apocalyptic number.

121514220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121514220 is an abundant number, since it is smaller than the sum of its proper divisors (247079460).

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

121514220 is a wasteful number, since it uses less digits than its factorization.

121514220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675094 (or 675089 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 121514220 is about 11023.3488559512. The cubic root of 121514220 is about 495.3084089695.

Adding to 121514220 its reverse (22415121), we get a palindrome (143929341).

Subtracting from 121514220 its reverse (22415121), we obtain a palindrome (99099099).

The spelling of 121514220 in words is "one hundred twenty-one million, five hundred fourteen thousand, two hundred twenty".