11121690 has 16 divisors (see below), whose sum is σ = 26692128. Its totient is φ = 2965776.

The previous prime is 11121683. The next prime is 11121709. The reversal of 11121690 is 9612111.

It is a super-2 number, since 2×11121690² = 247383976912200, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 185332 + ... + 185391.

It is an arithmetic number, because the mean of its divisors is an integer number (1668258).

Almost surely, 2^11121690 is an apocalyptic number.

11121690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11121690 is an abundant number, since it is smaller than the sum of its proper divisors (15570438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11121690 is a wasteful number, since it uses less digits than its factorization.

11121690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370733.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 11121690 is about 3334.9197891404. The cubic root of 11121690 is about 223.2151127985.

It can be divided in two parts, 11121 and 690, that added together give a palindrome (11811).

The spelling of 11121690 in words is "eleven million, one hundred twenty-one thousand, six hundred ninety".