12023212985 has 16 divisors (see below), whose sum is σ = 16498290816. Its totient is φ = 8239832448.

The previous prime is 12023212933. The next prime is 12023212987. The reversal of 12023212985 is 58921232021.

It is a cyclic number.

It is not a de Polignac number, because 12023212985 - 2¹² = 12023208889 is a prime.

It is a super-2 number, since 2×12023212985² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (12023212987) 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 15 ways as a sum of consecutive naturals, for example, 33572 + ... + 158661.

It is an arithmetic number, because the mean of its divisors is an integer number (1031143176).

Almost surely, 2^12023212985 is an apocalyptic number.

It is an amenable number.

12023212985 is a deficient number, since it is larger than the sum of its proper divisors (4475077831).

12023212985 is a wasteful number, since it uses less digits than its factorization.

12023212985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194032.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 12023212985 in words is "twelve billion, twenty-three million, two hundred twelve thousand, nine hundred eighty-five".