1213023113232 has 160 divisors (see below), whose sum is σ = 3643446804480. Its totient is φ = 340608215040.

The previous prime is 1213023113213. The next prime is 1213023113233. The reversal of 1213023113232 is 2323113203121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1213023113233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5212744 + ... + 5440472.

It is an arithmetic number, because the mean of its divisors is an integer number (22771542528).

Almost surely, 2^{1213023113232} is an apocalyptic number.

1213023113232 is a gapful number since it is divisible by the number (12) 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 1213023113232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821723402240).

1213023113232 is an abundant number, since it is smaller than the sum of its proper divisors (2430423691248).

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

1213023113232 is a wasteful number, since it uses less digits than its factorization.

1213023113232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228021 (or 228015 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1213023113232 its reverse (2323113203121), we get a palindrome (3536136316353).

The spelling of 1213023113232 in words is "one trillion, two hundred thirteen billion, twenty-three million, one hundred thirteen thousand, two hundred thirty-two".