122220001121111 has 2 divisors, whose sum is σ = 122220001121112. Its totient is φ = 122220001121110.

The previous prime is 122220001121089. The next prime is 122220001121117. The reversal of 122220001121111 is 111121100022221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122220001121111 - 2⁶ = 122220001121047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122220001121111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122220001121117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110000560555 + 61110000560556.

It is an arithmetic number, because the mean of its divisors is an integer number (61110000560556).

Almost surely, 2^{122220001121111} is an apocalyptic number.

122220001121111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220001121111 is an equidigital number, since it uses as much as digits as its factorization.

122220001121111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 122220001121111 its reverse (111121100022221), we get a palindrome (233341101143332).

The spelling of 122220001121111 in words is "one hundred twenty-two trillion, two hundred twenty billion, one million, one hundred twenty-one thousand, one hundred eleven".