1223201313312 has 96 divisors (see below), whose sum is σ = 3547143290880. Its totient is φ = 365975051520.

The previous prime is 1223201313277. The next prime is 1223201313317. The reversal of 1223201313312 is 2133131023221.

It is a tau number, because it is divible by the number of its divisors (96).

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 (1223201313317) 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, 7247808 + ... + 7414655.

It is an arithmetic number, because the mean of its divisors is an integer number (36949409280).

Almost surely, 2^{1223201313312} is an apocalyptic number.

1223201313312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223201313312 is an abundant number, since it is smaller than the sum of its proper divisors (2323941977568).

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

1223201313312 is a wasteful number, since it uses less digits than its factorization.

1223201313312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14662566 (or 14662558 counting only the distinct ones).

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

Adding to 1223201313312 its reverse (2133131023221), we get a palindrome (3356332336533).

The spelling of 1223201313312 in words is "one trillion, two hundred twenty-three billion, two hundred one million, three hundred thirteen thousand, three hundred twelve".