1121445131 has 2 divisors, whose sum is σ = 1121445132. Its totient is φ = 1121445130.

The previous prime is 1121445107. The next prime is 1121445133. The reversal of 1121445131 is 1315441211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121445131 - 2⁶ = 1121445067 is a prime.

It is a super-2 number, since 2×1121445131² = 2515278363687214322, which contains 22 as substring.

Together with 1121445133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121445097 and 1121445106.

It is not a weakly prime, because it can be changed into another prime (1121445133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560722565 + 560722566.

It is an arithmetic number, because the mean of its divisors is an integer number (560722566).

Almost surely, 2^1121445131 is an apocalyptic number.

1121445131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121445131 is an equidigital number, since it uses as much as digits as its factorization.

1121445131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 1121445131 is about 33487.9848751758. The cubic root of 1121445131 is about 1038.9452851986.

Adding to 1121445131 its reverse (1315441211), we get a palindrome (2436886342).

The spelling of 1121445131 in words is "one billion, one hundred twenty-one million, four hundred forty-five thousand, one hundred thirty-one".