1212320121330 has 16 divisors (see below), whose sum is σ = 2909568291264. Its totient is φ = 323285365680.

The previous prime is 1212320121283. The next prime is 1212320121349. The reversal of 1212320121330 is 331210232121.

It is a junction number, because it is equal to n+sod(n) for n = 1212320121297 and 1212320121306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20205335326 + ... + 20205335385.

It is an arithmetic number, because the mean of its divisors is an integer number (181848018204).

Almost surely, 2^{1212320121330} is an apocalyptic number.

1212320121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212320121330 is an abundant number, since it is smaller than the sum of its proper divisors (1697248169934).

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

1212320121330 is a wasteful number, since it uses less digits than its factorization.

1212320121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40410670721.

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

Adding to 1212320121330 its reverse (331210232121), we get a palindrome (1543530353451).

The spelling of 1212320121330 in words is "one trillion, two hundred twelve billion, three hundred twenty million, one hundred twenty-one thousand, three hundred thirty".