121300000 has 72 divisors (see below), whose sum is σ = 298738692. Its totient is φ = 48480000.

The previous prime is 121299991. The next prime is 121300007. The reversal of 121300000 is 3121.

It can be written as a sum of positive squares in 6 ways, for example, as 43930384 + 77369616 = 6628^2 + 8796^2 .

It is not an unprimeable number, because it can be changed into a prime (121300007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99394 + ... + 100606.

Almost surely, 2^121300000 is an apocalyptic number.

121300000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149369346).

121300000 is an abundant number, since it is smaller than the sum of its proper divisors (177438692).

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

121300000 is an frugal number, since it uses more digits than its factorization.

121300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 121300000 is about 11013.6279218067. The cubic root of 121300000 is about 495.0171745223.

Adding to 121300000 its reverse (3121), we get a palindrome (121303121).

The spelling of 121300000 in words is "one hundred twenty-one million, three hundred thousand".