210220120111 has 24 divisors (see below), whose sum is σ = 225672894720. Its totient is φ = 195685185696.

The previous prime is 210220120051. The next prime is 210220120147. The reversal of 210220120111 is 111021022012.

It is not a de Polignac number, because 210220120111 - 2¹¹ = 210220118063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210220120091 and 210220120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220120151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2608620 + ... + 2687998.

It is an arithmetic number, because the mean of its divisors is an integer number (9403037280).

Almost surely, 2^210220120111 is an apocalyptic number.

210220120111 is a deficient number, since it is larger than the sum of its proper divisors (15452774609).

210220120111 is an equidigital number, since it uses as much as digits as its factorization.

210220120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79551 (or 79522 counting only the distinct ones).

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

Adding to 210220120111 its reverse (111021022012), we get a palindrome (321241142123).

The spelling of 210220120111 in words is "two hundred ten billion, two hundred twenty million, one hundred twenty thousand, one hundred eleven".