220102211111 has 2 divisors, whose sum is σ = 220102211112. Its totient is φ = 220102211110.

The previous prime is 220102211101. The next prime is 220102211117. The reversal of 220102211111 is 111112201022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220102211111 - 2⁶ = 220102211047 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220102211117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110051105555 + 110051105556.

It is an arithmetic number, because the mean of its divisors is an integer number (110051105556).

Almost surely, 2^220102211111 is an apocalyptic number.

220102211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

220102211111 is an equidigital number, since it uses as much as digits as its factorization.

220102211111 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 14.

Adding to 220102211111 its reverse (111112201022), we get a palindrome (331214412133).

It can be divided in two parts, 2201022 and 11111, that multiplied together give a palindrome (24455555442).

The spelling of 220102211111 in words is "two hundred twenty billion, one hundred two million, two hundred eleven thousand, one hundred eleven".