1121001123 has 16 divisors (see below), whose sum is σ = 1633470336. Its totient is φ = 678176640.

The previous prime is 1121001109. The next prime is 1121001143. The reversal of 1121001123 is 3211001211.

It is not a de Polignac number, because 1121001123 - 2⁴ = 1121001107 is a prime.

It is a super-2 number, since 2×1121001123² = 2513287035534522258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121001099 and 1121001108.

It is not an unprimeable number, because it can be changed into a prime (1121001143) 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, 11590 + ... + 48747.

It is an arithmetic number, because the mean of its divisors is an integer number (102091896).

Almost surely, 2^1121001123 is an apocalyptic number.

1121001123 is a deficient number, since it is larger than the sum of its proper divisors (512469213).

1121001123 is a wasteful number, since it uses less digits than its factorization.

1121001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60914.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1121001123 is about 33481.3548560986. The cubic root of 1121001123 is about 1038.8081523454.

Adding to 1121001123 its reverse (3211001211), we get a palindrome (4332002334).

The spelling of 1121001123 in words is "one billion, one hundred twenty-one million, one thousand, one hundred twenty-three".