1121310011 has 4 divisors (see below), whose sum is σ = 1147387032. Its totient is φ = 1095232992.

The previous prime is 1121309999. The next prime is 1121310017. The reversal of 1121310011 is 1100131211.

It is a happy number.

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 1121310011 - 2²² = 1117115707 is a prime.

It is a super-2 number, since 2×1121310011² = 2514672281537640242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121309974 and 1121310001.

It is not an unprimeable number, because it can be changed into a prime (1121310017) 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 3 ways as a sum of consecutive naturals, for example, 13038446 + ... + 13038531.

It is an arithmetic number, because the mean of its divisors is an integer number (286846758).

Almost surely, 2^1121310011 is an apocalyptic number.

1121310011 is a deficient number, since it is larger than the sum of its proper divisors (26077021).

1121310011 is an equidigital number, since it uses as much as digits as its factorization.

1121310011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26077020.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1121310011 is about 33485.9673744092. The cubic root of 1121310011 is about 1038.9035569198.

Adding to 1121310011 its reverse (1100131211), we get a palindrome (2221441222).

The spelling of 1121310011 in words is "one billion, one hundred twenty-one million, three hundred ten thousand, eleven".