1321103233331 has 16 divisors (see below), whose sum is σ = 1512059695104. Its totient is φ = 1130704264224.

The previous prime is 1321103233273. The next prime is 1321103233397. The reversal of 1321103233331 is 1333323011231.

It is a cyclic number.

It is not a de Polignac number, because 1321103233331 - 2²² = 1321099039027 is a prime.

It is a super-2 number, since 2×1321103233331² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321103233331.

It is not an unprimeable number, because it can be changed into a prime (1321103233531) 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, 27999746 + ... + 28046888.

It is an arithmetic number, because the mean of its divisors is an integer number (94503730944).

Almost surely, 2^{1321103233331} is an apocalyptic number.

1321103233331 is a deficient number, since it is larger than the sum of its proper divisors (190956461773).

1321103233331 is an equidigital number, since it uses as much as digits as its factorization.

1321103233331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52970.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1321103233331 its reverse (1333323011231), we get a palindrome (2654426244562).

The spelling of 1321103233331 in words is "one trillion, three hundred twenty-one billion, one hundred three million, two hundred thirty-three thousand, three hundred thirty-one".