12013121301220 has 48 divisors (see below), whose sum is σ = 27224854594560. Its totient is φ = 4426353818496.

The previous prime is 12013121301217. The next prime is 12013121301221. The reversal of 12013121301220 is 2210312131021.

It is not an unprimeable number, because it can be changed into a prime (12013121301221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48105432 + ... + 48354511.

It is an arithmetic number, because the mean of its divisors is an integer number (567184470720).

Almost surely, 2^{12013121301220} is an apocalyptic number.

12013121301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013121301220 is an abundant number, since it is smaller than the sum of its proper divisors (15211733293340).

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

12013121301220 is a wasteful number, since it uses less digits than its factorization.

12013121301220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96460444 (or 96460442 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12013121301220 its reverse (2210312131021), we get a palindrome (14223433432241).

The spelling of 12013121301220 in words is "twelve trillion, thirteen billion, one hundred twenty-one million, three hundred one thousand, two hundred twenty".