1121211311323 has 4 divisors (see below), whose sum is σ = 1122475361040. Its totient is φ = 1119947261608.

The previous prime is 1121211311317. The next prime is 1121211311351. The reversal of 1121211311323 is 3231131121211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121211311323 - 2²⁹ = 1120674440411 is a prime.

It is a super-2 number, since 2×1121211311323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121211311294 and 1121211311303.

It is not an unprimeable number, because it can be changed into a prime (1121211311123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632023528 + ... + 632025301.

It is an arithmetic number, because the mean of its divisors is an integer number (280618840260).

Almost surely, 2^{1121211311323} is an apocalyptic number.

1121211311323 is a deficient number, since it is larger than the sum of its proper divisors (1264049717).

1121211311323 is an equidigital number, since it uses as much as digits as its factorization.

1121211311323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264049716.

The product of its digits is 216, while the sum is 22.

Adding to 1121211311323 its reverse (3231131121211), we get a palindrome (4352342432534).

The spelling of 1121211311323 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, three hundred eleven thousand, three hundred twenty-three".