1123212210 has 16 divisors (see below), whose sum is σ = 2695709376. Its totient is φ = 299523248.

The previous prime is 1123212169. The next prime is 1123212217. The reversal of 1123212210 is 122123211.

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 1123212210.

It is not an unprimeable number, because it can be changed into a prime (1123212217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18720174 + ... + 18720233.

It is an arithmetic number, because the mean of its divisors is an integer number (168481836).

Almost surely, 2^1123212210 is an apocalyptic number.

1123212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123212210 is an abundant number, since it is smaller than the sum of its proper divisors (1572497166).

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

1123212210 is a wasteful number, since it uses less digits than its factorization.

1123212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37440417.

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

The square root of 1123212210 is about 33514.3582662715. The cubic root of 1123212210 is about 1039.4906930548.

Adding to 1123212210 its reverse (122123211), we get a palindrome (1245335421).

The spelling of 1123212210 in words is "one billion, one hundred twenty-three million, two hundred twelve thousand, two hundred ten".