12020221011 has 8 divisors (see below), whose sum is σ = 16027470784. Its totient is φ = 8013225960.

The previous prime is 12020220959. The next prime is 12020221027. The reversal of 12020221011 is 11012202021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12020221011 - 2¹¹ = 12020218963 is a prime.

It is a super-3 number, since 3×12020221011³ (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 (12020221111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134880 + ... + 205506.

It is an arithmetic number, because the mean of its divisors is an integer number (2003433848).

Almost surely, 2^12020221011 is an apocalyptic number.

12020221011 is a deficient number, since it is larger than the sum of its proper divisors (4007249773).

12020221011 is an equidigital number, since it uses as much as digits as its factorization.

12020221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127361.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12020221011 its reverse (11012202021), we get a palindrome (23032423032).

The spelling of 12020221011 in words is "twelve billion, twenty million, two hundred twenty-one thousand, eleven".