12215443023 has 24 divisors (see below), whose sum is σ = 20170339488. Its totient is φ = 6978465792.

The previous prime is 12215442989. The next prime is 12215443049. The reversal of 12215443023 is 32034451221.

12215443023 is a `hidden beast` number, since 1 + 2 + 215 + 443 + 0 + 2 + 3 = 666.

It is not a de Polignac number, because 12215443023 - 2⁹ = 12215442511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215443063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246511 + ... + 291887.

It is an arithmetic number, because the mean of its divisors is an integer number (840430812).

Almost surely, 2^12215443023 is an apocalyptic number.

12215443023 is a deficient number, since it is larger than the sum of its proper divisors (7954896465).

12215443023 is a wasteful number, since it uses less digits than its factorization.

12215443023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49663 (or 49660 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 12215443023 its reverse (32034451221), we get a palindrome (44249894244).

The spelling of 12215443023 in words is "twelve billion, two hundred fifteen million, four hundred forty-three thousand, twenty-three".