121313252530 has 8 divisors (see below), whose sum is σ = 218363854572. Its totient is φ = 48525301008.

The previous prime is 121313252527. The next prime is 121313252539. The reversal of 121313252530 is 35252313121.

121313252530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 120786136849 + 527115681 = 347543^2 + 22959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121313252539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6065662617 + ... + 6065662636.

Almost surely, 2^121313252530 is an apocalyptic number.

121313252530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121313252530 is a deficient number, since it is larger than the sum of its proper divisors (97050602042).

121313252530 is a wasteful number, since it uses less digits than its factorization.

121313252530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12131325260.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 121313252530 its reverse (35252313121), we get a palindrome (156565565651).

The spelling of 121313252530 in words is "one hundred twenty-one billion, three hundred thirteen million, two hundred fifty-two thousand, five hundred thirty".