1220102111 has 2 divisors, whose sum is σ = 1220102112. Its totient is φ = 1220102110.

The previous prime is 1220102099. The next prime is 1220102113. The reversal of 1220102111 is 1112010221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220102111 - 2¹⁰ = 1220101087 is a prime.

It is a super-2 number, since 2×1220102111² = 2977298322533312642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1220102113, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220102092 and 1220102101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220102113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610051055 + 610051056.

It is an arithmetic number, because the mean of its divisors is an integer number (610051056).

Almost surely, 2^1220102111 is an apocalyptic number.

1220102111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220102111 is an equidigital number, since it uses as much as digits as its factorization.

1220102111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1220102111 is about 34929.9600772746. The cubic root of 1220102111 is about 1068.5595404208.

Adding to 1220102111 its reverse (1112010221), we get a palindrome (2332112332).

The spelling of 1220102111 in words is "one billion, two hundred twenty million, one hundred two thousand, one hundred eleven".