1212320232 has 48 divisors (see below), whose sum is σ = 3456180000. Its totient is φ = 382837536.

The previous prime is 1212320231. The next prime is 1212320233. The reversal of 1212320232 is 2320232121.

It is an interprime number because it is at equal distance from previous prime (1212320231) and next prime (1212320233).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1212320231) 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 11 ways as a sum of consecutive naturals, for example, 441732 + ... + 444467.

It is an arithmetic number, because the mean of its divisors is an integer number (72003750).

Almost surely, 2^1212320232 is an apocalyptic number.

1212320232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212320232 is an abundant number, since it is smaller than the sum of its proper divisors (2243859768).

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

1212320232 is a wasteful number, since it uses less digits than its factorization.

1212320232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886230 (or 886223 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1212320232 is about 34818.3892792300. The cubic root of 1212320232 is about 1066.2829160359.

Adding to 1212320232 its reverse (2320232121), we get a palindrome (3532552353).

The spelling of 1212320232 in words is "one billion, two hundred twelve million, three hundred twenty thousand, two hundred thirty-two".