1012220212111 has 2 divisors, whose sum is σ = 1012220212112. Its totient is φ = 1012220212110.

The previous prime is 1012220212043. The next prime is 1012220212127. The reversal of 1012220212111 is 1112120222101.

It is an a-pointer prime, because the next prime (1012220212127) can be obtained adding 1012220212111 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012220212111 - 2⁹ = 1012220211599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012220612111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506110106055 + 506110106056.

It is an arithmetic number, because the mean of its divisors is an integer number (506110106056).

Almost surely, 2^{1012220212111} is an apocalyptic number.

1012220212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012220212111 is an equidigital number, since it uses as much as digits as its factorization.

1012220212111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1012220212111 its reverse (1112120222101), we get a palindrome (2124340434212).

The spelling of 1012220212111 in words is "one trillion, twelve billion, two hundred twenty million, two hundred twelve thousand, one hundred eleven".