121312231312300 has 108 divisors (see below), whose sum is σ = 306231895154304. Its totient is φ = 41592063811200.

The previous prime is 121312231312271. The next prime is 121312231312313. The reversal of 121312231312300 is 3213132213121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 350652405 + ... + 350998195.

It is an arithmetic number, because the mean of its divisors is an integer number (2835480510688).

Almost surely, 2^{121312231312300} is an apocalyptic number.

121312231312300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121312231312300 is an abundant number, since it is smaller than the sum of its proper divisors (184919663842004).

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

121312231312300 is a wasteful number, since it uses less digits than its factorization.

121312231312300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417416 (or 417402 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 121312231312300 its reverse (3213132213121), we get a palindrome (124525363525421).

The spelling of 121312231312300 in words is "one hundred twenty-one trillion, three hundred twelve billion, two hundred thirty-one million, three hundred twelve thousand, three hundred".