12021166583 has 4 divisors (see below), whose sum is σ = 12030393648. Its totient is φ = 12011939520.

The previous prime is 12021166567. The next prime is 12021166589. The reversal of 12021166583 is 38566112021.

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 12021166583 - 2⁴ = 12021166567 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 (12021166589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4611578 + ... + 4614183.

It is an arithmetic number, because the mean of its divisors is an integer number (3007598412).

Almost surely, 2^12021166583 is an apocalyptic number.

12021166583 is a deficient number, since it is larger than the sum of its proper divisors (9227065).

12021166583 is an equidigital number, since it uses as much as digits as its factorization.

12021166583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9227064.

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

The spelling of 12021166583 in words is "twelve billion, twenty-one million, one hundred sixty-six thousand, five hundred eighty-three".