1121232210 has 48 divisors (see below), whose sum is σ = 3130301376. Its totient is φ = 256281312.

The previous prime is 1121232187. The next prime is 1121232239. The reversal of 1121232210 is 122321211.

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 1121232210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 379902 + ... + 382841.

It is an arithmetic number, because the mean of its divisors is an integer number (65214612).

Almost surely, 2^1121232210 is an apocalyptic number.

1121232210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121232210 is an abundant number, since it is smaller than the sum of its proper divisors (2009069166).

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

1121232210 is a wasteful number, since it uses less digits than its factorization.

1121232210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762767 (or 762760 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1121232210 is about 33484.8056586864. The cubic root of 1121232210 is about 1038.8795285945.

Adding to 1121232210 its reverse (122321211), we get a palindrome (1243553421).

The spelling of 1121232210 in words is "one billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred ten".