1122431121 has 16 divisors (see below), whose sum is σ = 1900412800. Its totient is φ = 641389104.

The previous prime is 1122431117. The next prime is 1122431153. The reversal of 1122431121 is 1211342211.

1122431121 is a `hidden beast` number, since 112 + 2 + 431 + 121 = 666.

It is not a de Polignac number, because 1122431121 - 2² = 1122431117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122431094 and 1122431103.

It is not an unprimeable number, because it can be changed into a prime (1122431221) 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, 2969206 + ... + 2969583.

It is an arithmetic number, because the mean of its divisors is an integer number (118775800).

Almost surely, 2^1122431121 is an apocalyptic number.

It is an amenable number.

1122431121 is a deficient number, since it is larger than the sum of its proper divisors (777981679).

1122431121 is an equidigital number, since it uses as much as digits as its factorization.

1122431121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938805 (or 5938799 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1122431121 is about 33502.7031894443. The cubic root of 1122431121 is about 1039.2496810063.

Adding to 1122431121 its reverse (1211342211), we get a palindrome (2333773332).

The spelling of 1122431121 in words is "one billion, one hundred twenty-two million, four hundred thirty-one thousand, one hundred twenty-one".