121312320333330 has 64 divisors (see below), whose sum is σ = 344216238992640. Its totient is φ = 26772374141184.

The previous prime is 121312320333277. The next prime is 121312320333331. The reversal of 121312320333330 is 33333023213121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (121312320333331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9959954529 + ... + 9959966708.

It is an arithmetic number, because the mean of its divisors is an integer number (5378378734260).

Almost surely, 2^{121312320333330} is an apocalyptic number.

121312320333330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121312320333330 is an abundant number, since it is smaller than the sum of its proper divisors (222903918659310).

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

121312320333330 is a wasteful number, since it uses less digits than its factorization.

121312320333330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19919921283.

The product of its (nonzero) digits is 17496, while the sum is 30.

Adding to 121312320333330 its reverse (33333023213121), we get a palindrome (154645343546451).

The spelling of 121312320333330 in words is "one hundred twenty-one trillion, three hundred twelve billion, three hundred twenty million, three hundred thirty-three thousand, three hundred thirty".