1123020313211 has 16 divisors (see below), whose sum is σ = 1150560465600. Its totient is φ = 1095829378560.

The previous prime is 1123020313201. The next prime is 1123020313213. The reversal of 1123020313211 is 1123130203211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1123020313211 - 2¹⁸ = 1123020051067 is a prime.

It is a super-2 number, since 2×1123020313211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123020313213) 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, 7816241 + ... + 7958621.

It is an arithmetic number, because the mean of its divisors is an integer number (71910029100).

Almost surely, 2^{1123020313211} is an apocalyptic number.

1123020313211 is a deficient number, since it is larger than the sum of its proper divisors (27540152389).

1123020313211 is a wasteful number, since it uses less digits than its factorization.

1123020313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143606.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1123020313211 its reverse (1123130203211), we get a palindrome (2246150516422).

The spelling of 1123020313211 in words is "one trillion, one hundred twenty-three billion, twenty million, three hundred thirteen thousand, two hundred eleven".