1201223101323 has 32 divisors (see below), whose sum is σ = 1874492928000. Its totient is φ = 669916943136.

The previous prime is 1201223101319. The next prime is 1201223101339. The reversal of 1201223101323 is 3231013221021.

It is not a de Polignac number, because 1201223101323 - 2² = 1201223101319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1201223101323.

It is not an unprimeable number, because it can be changed into a prime (1201223101423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 608578 + ... + 1665176.

It is an arithmetic number, because the mean of its divisors is an integer number (58577904000).

Almost surely, 2^{1201223101323} is an apocalyptic number.

1201223101323 is a deficient number, since it is larger than the sum of its proper divisors (673269826677).

1201223101323 is a wasteful number, since it uses less digits than its factorization.

1201223101323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057911.

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

Adding to 1201223101323 its reverse (3231013221021), we get a palindrome (4432236322344).

The spelling of 1201223101323 in words is "one trillion, two hundred one billion, two hundred twenty-three million, one hundred one thousand, three hundred twenty-three".