210220221020111 has 2 divisors, whose sum is σ = 210220221020112. Its totient is φ = 210220221020110.

The previous prime is 210220221020101. The next prime is 210220221020189. The reversal of 210220221020111 is 111020122022012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210220221020111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210220221020111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210220221020101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110110510055 + 105110110510056.

It is an arithmetic number, because the mean of its divisors is an integer number (105110110510056).

Almost surely, 2^{210220221020111} is an apocalyptic number.

210220221020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

210220221020111 is an equidigital number, since it uses as much as digits as its factorization.

210220221020111 is an evil number, because the sum of its binary digits is even.

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

Adding to 210220221020111 its reverse (111020122022012), we get a palindrome (321240343042123).

The spelling of 210220221020111 in words is "two hundred ten trillion, two hundred twenty billion, two hundred twenty-one million, twenty thousand, one hundred eleven".