12023219977 has 4 divisors (see below), whose sum is σ = 12279033216. Its totient is φ = 11767406740.

The previous prime is 12023219959. The next prime is 12023219993. The reversal of 12023219977 is 77991232021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12023219977 - 2¹¹ = 12023217929 is a prime.

It is a super-3 number, since 3×12023219977³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12023219777) 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, 127906549 + ... + 127906642.

It is an arithmetic number, because the mean of its divisors is an integer number (3069758304).

Almost surely, 2^12023219977 is an apocalyptic number.

It is an amenable number.

12023219977 is a deficient number, since it is larger than the sum of its proper divisors (255813239).

12023219977 is an equidigital number, since it uses as much as digits as its factorization.

12023219977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255813238.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 12023219977 in words is "twelve billion, twenty-three million, two hundred nineteen thousand, nine hundred seventy-seven".