12019272287 has 4 divisors (see below), whose sum is σ = 13111933416. Its totient is φ = 10926611160.

The previous prime is 12019272281. The next prime is 12019272313. The reversal of 12019272287 is 78227291021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12019272287 - 2²² = 12015077983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12019272281) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 546330548 + ... + 546330569.

It is an arithmetic number, because the mean of its divisors is an integer number (3277983354).

Almost surely, 2^12019272287 is an apocalyptic number.

12019272287 is a deficient number, since it is larger than the sum of its proper divisors (1092661129).

12019272287 is a wasteful number, since it uses less digits than its factorization.

12019272287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092661128.

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 12019272287 in words is "twelve billion, nineteen million, two hundred seventy-two thousand, two hundred eighty-seven".