1122131421 has 16 divisors (see below), whose sum is σ = 1663062400. Its totient is φ = 747797184.

The previous prime is 1122131407. The next prime is 1122131497. The reversal of 1122131421 is 1241312211.

1122131421 is a `hidden beast` number, since 112 + 2 + 131 + 421 = 666.

It is not a de Polignac number, because 1122131421 - 2⁵ = 1122131389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122131394 and 1122131403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122131221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80400 + ... + 93318.

It is an arithmetic number, because the mean of its divisors is an integer number (103941400).

Almost surely, 2^1122131421 is an apocalyptic number.

It is an amenable number.

1122131421 is a deficient number, since it is larger than the sum of its proper divisors (540930979).

1122131421 is a wasteful number, since it uses less digits than its factorization.

1122131421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16145 (or 16139 counting only the distinct ones).

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

The square root of 1122131421 is about 33498.2301174256. The cubic root of 1122131421 is about 1039.1571761898.

Adding to 1122131421 its reverse (1241312211), we get a palindrome (2363443632).

The spelling of 1122131421 in words is "one billion, one hundred twenty-two million, one hundred thirty-one thousand, four hundred twenty-one".