210220102111111 has 4 divisors (see below), whose sum is σ = 211162793152192. Its totient is φ = 209277411070032.

The previous prime is 210220102111093. The next prime is 210220102111133. The reversal of 210220102111111 is 111111201022012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210220102111111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220102118111) 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, 471345520206 + ... + 471345520651.

It is an arithmetic number, because the mean of its divisors is an integer number (52790698288048).

Almost surely, 2^{210220102111111} is an apocalyptic number.

210220102111111 is a deficient number, since it is larger than the sum of its proper divisors (942691041081).

210220102111111 is an equidigital number, since it uses as much as digits as its factorization.

210220102111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942691041080.

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

Adding to 210220102111111 its reverse (111111201022012), we get a palindrome (321331303133123).

The spelling of 210220102111111 in words is "two hundred ten trillion, two hundred twenty billion, one hundred two million, one hundred eleven thousand, one hundred eleven".