1113405122 has 4 divisors (see below), whose sum is σ = 1670107686. Its totient is φ = 556702560.

The previous prime is 1113405121. The next prime is 1113405133. The reversal of 1113405122 is 2215043111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2215043111 = 467 ⋅4743133.

It can be written as a sum of positive squares in only one way, i.e., 882030601 + 231374521 = 29699^2 + 15211^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1113405094 and 1113405103.

It is not an unprimeable number, because it can be changed into a prime (1113405121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278351279 + ... + 278351282.

Almost surely, 2^1113405122 is an apocalyptic number.

1113405122 is a deficient number, since it is larger than the sum of its proper divisors (556702564).

1113405122 is an equidigital number, since it uses as much as digits as its factorization.

1113405122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556702563.

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

The square root of 1113405122 is about 33367.7257540876. The cubic root of 1113405122 is about 1036.4564811805.

Adding to 1113405122 its reverse (2215043111), we get a palindrome (3328448233).

The spelling of 1113405122 in words is "one billion, one hundred thirteen million, four hundred five thousand, one hundred twenty-two".