1122131405 has 16 divisors (see below), whose sum is σ = 1377707520. Its totient is φ = 877174272.

The previous prime is 1122131389. The next prime is 1122131407. The reversal of 1122131405 is 5041312211.

It is a cyclic number.

It is not a de Polignac number, because 1122131405 - 2⁴ = 1122131389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122131407) 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, 23672 + ... + 52958.

It is an arithmetic number, because the mean of its divisors is an integer number (86106720).

Almost surely, 2^1122131405 is an apocalyptic number.

It is an amenable number.

1122131405 is a deficient number, since it is larger than the sum of its proper divisors (255576115).

1122131405 is an equidigital number, since it uses as much as digits as its factorization.

1122131405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29468.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1122131405 is about 33498.2298786070. The cubic root of 1122131405 is about 1039.1571712508.

Adding to 1122131405 its reverse (5041312211), we get a palindrome (6163443616).

The spelling of 1122131405 in words is "one billion, one hundred twenty-two million, one hundred thirty-one thousand, four hundred five".