12222020011 has 4 divisors (see below), whose sum is σ = 12235799952. Its totient is φ = 12208240072.

The previous prime is 12222019987. The next prime is 12222020023. The reversal of 12222020011 is 11002022221.

It is a happy number.

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 12222020011 - 2⁹ = 12222019499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222019973 and 12222020000.

It is not an unprimeable number, because it can be changed into a prime (12222020711) 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, 6888640 + ... + 6890413.

It is an arithmetic number, because the mean of its divisors is an integer number (3058949988).

Almost surely, 2^12222020011 is an apocalyptic number.

12222020011 is a deficient number, since it is larger than the sum of its proper divisors (13779941).

12222020011 is an equidigital number, since it uses as much as digits as its factorization.

12222020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13779940.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12222020011 its reverse (11002022221), we get a palindrome (23224042232).

The spelling of 12222020011 in words is "twelve billion, two hundred twenty-two million, twenty thousand, eleven".