1220102011 has 2 divisors, whose sum is σ = 1220102012. Its totient is φ = 1220102010.

The previous prime is 1220102003. The next prime is 1220102033. The reversal of 1220102011 is 1102010221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220102011 - 2³ = 1220102003 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220102111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610051005 + 610051006.

It is an arithmetic number, because the mean of its divisors is an integer number (610051006).

Almost surely, 2^1220102011 is an apocalyptic number.

1220102011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220102011 is an equidigital number, since it uses as much as digits as its factorization.

1220102011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1220102011 is about 34929.9586458387. The cubic root of 1220102011 is about 1068.5595112277.

Adding to 1220102011 its reverse (1102010221), we get a palindrome (2322112232).

The spelling of 1220102011 in words is "one billion, two hundred twenty million, one hundred two thousand, eleven".