1220101010111 has 2 divisors, whose sum is σ = 1220101010112. Its totient is φ = 1220101010110.

The previous prime is 1220101010087. The next prime is 1220101010119. The reversal of 1220101010111 is 1110101010221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220101010111 - 2¹⁰ = 1220101009087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220101010092 and 1220101010101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220101010119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610050505055 + 610050505056.

It is an arithmetic number, because the mean of its divisors is an integer number (610050505056).

Almost surely, 2^{1220101010111} is an apocalyptic number.

1220101010111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220101010111 is an equidigital number, since it uses as much as digits as its factorization.

1220101010111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1220101010111 its reverse (1110101010221), we get a palindrome (2330202020332).

The spelling of 1220101010111 in words is "one trillion, two hundred twenty billion, one hundred one million, ten thousand, one hundred eleven".