1331121123 has 6 divisors (see below), whose sum is σ = 1922730524. Its totient is φ = 887414076.

The previous prime is 1331121109. The next prime is 1331121157. The reversal of 1331121123 is 3211211331.

It is not a de Polignac number, because 1331121123 - 2⁴ = 1331121107 is a prime.

It is a super-2 number, since 2×1331121123² = 3543766888193562258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331121096 and 1331121105.

It is not an unprimeable number, because it can be changed into a prime (1331121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73951165 + ... + 73951182.

Almost surely, 2^1331121123 is an apocalyptic number.

1331121123 is a deficient number, since it is larger than the sum of its proper divisors (591609401).

1331121123 is a wasteful number, since it uses less digits than its factorization.

1331121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147902353 (or 147902350 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1331121123 is about 36484.5326542632. The cubic root of 1331121123 is about 1100.0333662055.

Adding to 1331121123 its reverse (3211211331), we get a palindrome (4542332454).

The spelling of 1331121123 in words is "one billion, three hundred thirty-one million, one hundred twenty-one thousand, one hundred twenty-three".