1212264320 has 32 divisors (see below), whose sum is σ = 2898070920. Its totient is φ = 484905472.

The previous prime is 1212264307. The next prime is 1212264329. The reversal of 1212264320 is 234622121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212264329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946442 + ... + 947721.

Almost surely, 2^1212264320 is an apocalyptic number.

1212264320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212264320 is an abundant number, since it is smaller than the sum of its proper divisors (1685806600).

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

1212264320 is an equidigital number, since it uses as much as digits as its factorization.

1212264320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894182 (or 1894170 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1212264320 is about 34817.5863609182. The cubic root of 1212264320 is about 1066.2665235225.

Adding to 1212264320 its reverse (234622121), we get a palindrome (1446886441).

The spelling of 1212264320 in words is "one billion, two hundred twelve million, two hundred sixty-four thousand, three hundred twenty".