1220222210111 has 2 divisors, whose sum is σ = 1220222210112. Its totient is φ = 1220222210110.

The previous prime is 1220222210063. The next prime is 1220222210117. The reversal of 1220222210111 is 1110122220221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220222210111 - 2⁶ = 1220222210047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220222210111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220222210117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610111105055 + 610111105056.

It is an arithmetic number, because the mean of its divisors is an integer number (610111105056).

Almost surely, 2^{1220222210111} is an apocalyptic number.

1220222210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220222210111 is an equidigital number, since it uses as much as digits as its factorization.

1220222210111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1220222210111 its reverse (1110122220221), we get a palindrome (2330344430332).

The spelling of 1220222210111 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred ten thousand, one hundred eleven".