121312302012300 has 144 divisors (see below), whose sum is σ = 401142715223040. Its totient is φ = 27728293232640.

The previous prime is 121312302012299. The next prime is 121312302012301. The reversal of 121312302012300 is 3210203213121.

It is an interprime number because it is at equal distance from previous prime (121312302012299) and next prime (121312302012301).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121312302012301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 439448716 + ... + 439724684.

It is an arithmetic number, because the mean of its divisors is an integer number (2785713300160).

Almost surely, 2^{121312302012300} is an apocalyptic number.

121312302012300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121312302012300 is an abundant number, since it is smaller than the sum of its proper divisors (279830413210740).

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

121312302012300 is a wasteful number, since it uses less digits than its factorization.

121312302012300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485320 (or 485313 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121312302012300 its reverse (3210203213121), we get a palindrome (124522505225421).

The spelling of 121312302012300 in words is "one hundred twenty-one trillion, three hundred twelve billion, three hundred two million, twelve thousand, three hundred".