121321300 has 18 divisors (see below), whose sum is σ = 263267438. Its totient is φ = 48528480.

The previous prime is 121321283. The next prime is 121321307. The reversal of 121321300 is 3123121.

It can be written as a sum of positive squares in 3 ways, for example, as 11532816 + 109788484 = 3396^2 + 10478^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 606507 + ... + 606706.

Almost surely, 2^121321300 is an apocalyptic number.

121321300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121321300 is an abundant number, since it is smaller than the sum of its proper divisors (141946138).

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

121321300 is a wasteful number, since it uses less digits than its factorization.

121321300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213227 (or 1213220 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 121321300 is about 11014.5948631804. The cubic root of 121321300 is about 495.0461474509.

Adding to 121321300 its reverse (3123121), we get a palindrome (124444421).

The spelling of 121321300 in words is "one hundred twenty-one million, three hundred twenty-one thousand, three hundred".