11213081 has 16 divisors (see below), whose sum is σ = 13177728. Its totient is φ = 9427200.

The previous prime is 11213077. The next prime is 11213089. The reversal of 11213081 is 18031211.

It is a cyclic number.

It is not a de Polignac number, because 11213081 - 2² = 11213077 is a prime.

It is a super-2 number, since 2×11213081² = 251466371025122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10916 + ... + 11898.

It is an arithmetic number, because the mean of its divisors is an integer number (823608).

Almost surely, 2^11213081 is an apocalyptic number.

11213081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11213081 is a deficient number, since it is larger than the sum of its proper divisors (1964647).

11213081 is a wasteful number, since it uses less digits than its factorization.

11213081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 11213081 is about 3348.5938840056. The cubic root of 11213081 is about 223.8248591107.

Adding to 11213081 its reverse (18031211), we get a palindrome (29244292).

It can be divided in two parts, 112130 and 81, that added together give a palindrome (112211).

The spelling of 11213081 in words is "eleven million, two hundred thirteen thousand, eighty-one".