121313000 has 32 divisors (see below), whose sum is σ = 283874760. Its totient is φ = 48524800.

The previous prime is 121312999. The next prime is 121313009. The reversal of 121313000 is 313121.

It can be written as a sum of positive squares in 4 ways, for example, as 51523684 + 69789316 = 7178^2 + 8354^2 .

It is not an unprimeable number, because it can be changed into a prime (121313009) 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, 59657 + ... + 61656.

Almost surely, 2^121313000 is an apocalyptic number.

121313000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121313000 is an abundant number, since it is smaller than the sum of its proper divisors (162561760).

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

121313000 is a wasteful number, since it uses less digits than its factorization.

121313000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121334 (or 121320 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 121313000 is about 11014.2180839132. The cubic root of 121313000 is about 495.0348579336.

Adding to 121313000 its reverse (313121), we get a palindrome (121626121).

The spelling of 121313000 in words is "one hundred twenty-one million, three hundred thirteen thousand".