1212223013000 has 128 divisors (see below), whose sum is σ = 2914746232320. Its totient is φ = 471657945600.

The previous prime is 1212223012999. The next prime is 1212223013011. The reversal of 1212223013000 is 3103222121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212223013000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7581884 + ... + 7740116.

It is an arithmetic number, because the mean of its divisors is an integer number (22771454940).

Almost surely, 2^{1212223013000} is an apocalyptic number.

1212223013000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212223013000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1457373116160).

1212223013000 is an abundant number, since it is smaller than the sum of its proper divisors (1702523219320).

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

1212223013000 is a wasteful number, since it uses less digits than its factorization.

1212223013000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158464 (or 158450 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1212223013000 its reverse (3103222121), we get a palindrome (1215326235121).

The spelling of 1212223013000 in words is "one trillion, two hundred twelve billion, two hundred twenty-three million, thirteen thousand".