220120210111 has 2 divisors, whose sum is σ = 220120210112. Its totient is φ = 220120210110.

The previous prime is 220120210087. The next prime is 220120210147. The reversal of 220120210111 is 111012021022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220120210111 - 2⁹ = 220120209599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220120210091 and 220120210100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220120210511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060105055 + 110060105056.

It is an arithmetic number, because the mean of its divisors is an integer number (110060105056).

Almost surely, 2^220120210111 is an apocalyptic number.

220120210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

220120210111 is an equidigital number, since it uses as much as digits as its factorization.

220120210111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 220120210111 its reverse (111012021022), we get a palindrome (331132231133).

The spelling of 220120210111 in words is "two hundred twenty billion, one hundred twenty million, two hundred ten thousand, one hundred eleven".