11111232210 has 64 divisors (see below), whose sum is σ = 28731048192. Its totient is φ = 2733854976.

The previous prime is 11111232199. The next prime is 11111232227. The reversal of 11111232210 is 1223211111.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11111232210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1132747 + ... + 1142513.

It is an arithmetic number, because the mean of its divisors is an integer number (448922628).

Almost surely, 2^11111232210 is an apocalyptic number.

11111232210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111232210 is an abundant number, since it is smaller than the sum of its proper divisors (17619815982).

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

11111232210 is a wasteful number, since it uses less digits than its factorization.

11111232210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12707.

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

Adding to 11111232210 its reverse (1223211111), we get a palindrome (12334443321).

It can be divided in two parts, 1111 and 1232210, that added together give a palindrome (1233321).

The spelling of 11111232210 in words is "eleven billion, one hundred eleven million, two hundred thirty-two thousand, two hundred ten".