1213271472 has 80 divisors (see below), whose sum is σ = 3586095872. Its totient is φ = 346256640.

The previous prime is 1213271471. The next prime is 1213271497. The reversal of 1213271472 is 2741723121.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1213271471) 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 15 ways as a sum of consecutive naturals, for example, 432378 + ... + 435174.

Almost surely, 2^1213271472 is an apocalyptic number.

1213271472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213271472 is an abundant number, since it is smaller than the sum of its proper divisors (2372824400).

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

1213271472 is a wasteful number, since it uses less digits than its factorization.

1213271472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106 (or 4100 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 1213271472 is about 34832.0466237630. The cubic root of 1213271472 is about 1066.5617273500.

Adding to 1213271472 its reverse (2741723121), we get a palindrome (3954994593).

The spelling of 1213271472 in words is "one billion, two hundred thirteen million, two hundred seventy-one thousand, four hundred seventy-two".