11121656 has 32 divisors (see below), whose sum is σ = 25667040. Its totient is φ = 4399488.

The previous prime is 11121647. The next prime is 11121661. The reversal of 11121656 is 65612111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6911 + ... + 8366.

It is an arithmetic number, because the mean of its divisors is an integer number (802095).

Almost surely, 2^11121656 is an apocalyptic number.

It is an amenable number.

11121656 is an abundant number, since it is smaller than the sum of its proper divisors (14545384).

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

11121656 is a wasteful number, since it uses less digits than its factorization.

11121656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15303 (or 15299 counting only the distinct ones).

The product of its digits is 360, while the sum is 23.

The square root of 11121656 is about 3334.9146915626. The cubic root of 11121656 is about 223.2148853354.

Adding to 11121656 its reverse (65612111), we get a palindrome (76733767).

The spelling of 11121656 in words is "eleven million, one hundred twenty-one thousand, six hundred fifty-six".