11111020 has 24 divisors (see below), whose sum is σ = 24087168. Its totient is φ = 4300800.

The previous prime is 11110999. The next prime is 11111039. The reversal of 11111020 is 2011111.

It is a junction number, because it is equal to n+sod(n) for n = 11110994 and 11111012.

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, 8341 + ... + 9580.

It is an arithmetic number, because the mean of its divisors is an integer number (1003632).

Almost surely, 2^11111020 is an apocalyptic number.

11111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111020 is an abundant number, since it is smaller than the sum of its proper divisors (12976148).

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

11111020 is a wasteful number, since it uses less digits than its factorization.

11111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17961 (or 17959 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 11111020 is about 3333.3196666386. The cubic root of 11111020 is about 223.1437067646.

Adding to 11111020 its reverse (2011111), we get a palindrome (13122131).

Subtracting from 11111020 its reverse (2011111), we obtain a palindrome (9099909).

The spelling of 11111020 in words is "eleven million, one hundred eleven thousand, twenty".