12120220221011 has 16 divisors (see below), whose sum is σ = 13887753354240. Its totient is φ = 10361740536000.

The previous prime is 12120220220963. The next prime is 12120220221059. The reversal of 12120220221011 is 11012202202121.

It is an interprime number because it is at equal distance from previous prime (12120220220963) and next prime (12120220221059).

It is a de Polignac number, because none of the positive numbers 2^k-12120220221011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120220223011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2672495 + ... + 5602023.

It is an arithmetic number, because the mean of its divisors is an integer number (867984584640).

Almost surely, 2^{12120220221011} is an apocalyptic number.

12120220221011 is a deficient number, since it is larger than the sum of its proper divisors (1767533133229).

12120220221011 is an equidigital number, since it uses as much as digits as its factorization.

12120220221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931074.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12120220221011 its reverse (11012202202121), we get a palindrome (23132422423132).

The spelling of 12120220221011 in words is "twelve trillion, one hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, eleven".