1201311123321 has 8 divisors (see below), whose sum is σ = 1603404577984. Its totient is φ = 800045875440.

The previous prime is 1201311123191. The next prime is 1201311123373. The reversal of 1201311123321 is 1233211131021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201311123321 - 2¹³ = 1201311115129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201361123321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207048310 + ... + 207054111.

It is an arithmetic number, because the mean of its divisors is an integer number (200425572248).

Almost surely, 2^{1201311123321} is an apocalyptic number.

It is an amenable number.

1201311123321 is a deficient number, since it is larger than the sum of its proper divisors (402093454663).

1201311123321 is an equidigital number, since it uses as much as digits as its factorization.

1201311123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414103391.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1201311123321 its reverse (1233211131021), we get a palindrome (2434522254342).

The spelling of 1201311123321 in words is "one trillion, two hundred one billion, three hundred eleven million, one hundred twenty-three thousand, three hundred twenty-one".