1213312223020 has 48 divisors (see below), whose sum is σ = 2558941217280. Its totient is φ = 483232922816.

The previous prime is 1213312222987. The next prime is 1213312223021. The reversal of 1213312223020 is 203222133121.

It is a junction number, because it is equal to n+sod(n) for n = 1213312222982 and 1213312223000.

It is not an unprimeable number, because it can be changed into a prime (1213312223021) 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, 65777919 + ... + 65796361.

It is an arithmetic number, because the mean of its divisors is an integer number (53311275360).

Almost surely, 2^{1213312223020} is an apocalyptic number.

1213312223020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213312223020 is an abundant number, since it is smaller than the sum of its proper divisors (1345628994260).

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

1213312223020 is a wasteful number, since it uses less digits than its factorization.

1213312223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32454 (or 32452 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1213312223020 its reverse (203222133121), we get a palindrome (1416534356141).

The spelling of 1213312223020 in words is "one trillion, two hundred thirteen billion, three hundred twelve million, two hundred twenty-three thousand, twenty".