1123299011 has 4 divisors (see below), whose sum is σ = 1123654224. Its totient is φ = 1122943800.

The previous prime is 1123299007. The next prime is 1123299029. The reversal of 1123299011 is 1109923211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1123299011 - 2² = 1123299007 is a prime.

It is a super-2 number, since 2×1123299011² = 2523601336227156242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123299061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172820 + ... + 179201.

It is an arithmetic number, because the mean of its divisors is an integer number (280913556).

Almost surely, 2^1123299011 is an apocalyptic number.

1123299011 is a deficient number, since it is larger than the sum of its proper divisors (355213).

1123299011 is an equidigital number, since it uses as much as digits as its factorization.

1123299011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355212.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 1123299011 is about 33515.6532235312. The cubic root of 1123299011 is about 1039.5174693863.

The spelling of 1123299011 in words is "one billion, one hundred twenty-three million, two hundred ninety-nine thousand, eleven".