11121321210 has 16 divisors (see below), whose sum is σ = 26691170976. Its totient is φ = 2965685648.

The previous prime is 11121321181. The next prime is 11121321229. The reversal of 11121321210 is 1212312111.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11121321210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185355324 + ... + 185355383.

It is an arithmetic number, because the mean of its divisors is an integer number (1668198186).

Almost surely, 2^11121321210 is an apocalyptic number.

11121321210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11121321210 is an abundant number, since it is smaller than the sum of its proper divisors (15569849766).

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

11121321210 is a wasteful number, since it uses less digits than its factorization.

11121321210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370710717.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11121321210 its reverse (1212312111), we get a palindrome (12333633321).

Subtracting from 11121321210 its reverse (1212312111), we obtain a palindrome (9909009099).

The spelling of 11121321210 in words is "eleven billion, one hundred twenty-one million, three hundred twenty-one thousand, two hundred ten".