1212133110 has 32 divisors (see below), whose sum is σ = 2911051872. Its totient is φ = 323020800.

The previous prime is 1212133067. The next prime is 1212133123. The reversal of 1212133110 is 113312121.

It is a happy number.

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 1212133110.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 35412 + ... + 60648.

It is an arithmetic number, because the mean of its divisors is an integer number (90970371).

Almost surely, 2^1212133110 is an apocalyptic number.

1212133110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212133110 is an abundant number, since it is smaller than the sum of its proper divisors (1698918762).

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

1212133110 is a wasteful number, since it uses less digits than its factorization.

1212133110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26848.

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

The square root of 1212133110 is about 34815.7020609954. The cubic root of 1212133110 is about 1066.2280528479.

Adding to 1212133110 its reverse (113312121), we get a palindrome (1325445231).

The spelling of 1212133110 in words is "one billion, two hundred twelve million, one hundred thirty-three thousand, one hundred ten".