19221330312 has 36 divisors (see below), whose sum is σ = 52060955895. Its totient is φ = 6406717968.

The previous prime is 19221330287. The next prime is 19221330329. The reversal of 19221330312 is 21303312291.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

19221330312 is a `hidden beast` number, since 19 + 2 + 2 + 1 + 330 + 312 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9610665156 + 9610665156 = 98034^2 + 98034^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=98034.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 1168239 + ... + 1184577.

Almost surely, 2^19221330312 is an apocalyptic number.

19221330312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19221330312 is an abundant number, since it is smaller than the sum of its proper divisors (32839625583).

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

19221330312 is an frugal number, since it uses more digits than its factorization.

19221330312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32690 (or 16344 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 19221330312 in words is "nineteen billion, two hundred twenty-one million, three hundred thirty thousand, three hundred twelve".