121300120 has 32 divisors (see below), whose sum is σ = 274079520. Its totient is φ = 48314880.

The previous prime is 121300079. The next prime is 121300129. The reversal of 121300120 is 21003121.

121300120 is nontrivially palindromic in base 15.

It is a super-2 number, since 2×121300120² = 29427438224028800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 121300097 and 121300106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121300129) 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, 3349 + ... + 15931.

It is an arithmetic number, because the mean of its divisors is an integer number (8564985).

Almost surely, 2^121300120 is an apocalyptic number.

121300120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121300120 is an abundant number, since it is smaller than the sum of its proper divisors (152779400).

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

121300120 is a wasteful number, since it uses less digits than its factorization.

121300120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12835 (or 12831 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 121300120 is about 11013.6333696015. The cubic root of 121300120 is about 495.0173377596.

Adding to 121300120 its reverse (21003121), we get a palindrome (142303241).

The spelling of 121300120 in words is "one hundred twenty-one million, three hundred thousand, one hundred twenty".