11121630 has 32 divisors (see below), whose sum is σ = 28746144. Its totient is φ = 2737536.

The previous prime is 11121629. The next prime is 11121637. The reversal of 11121630 is 3612111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13869 + ... + 14648.

It is an arithmetic number, because the mean of its divisors is an integer number (898317).

Almost surely, 2^11121630 is an apocalyptic number.

11121630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11121630 is an abundant number, since it is smaller than the sum of its proper divisors (17624514).

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

11121630 is a wasteful number, since it uses less digits than its factorization.

11121630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28540.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 11121630 is about 3334.9107934096. The cubic root of 11121630 is about 223.2147113927.

Adding to 11121630 its reverse (3612111), we get a palindrome (14733741).

The spelling of 11121630 in words is "eleven million, one hundred twenty-one thousand, six hundred thirty".