1220112020111 has 2 divisors, whose sum is σ = 1220112020112. Its totient is φ = 1220112020110.

The previous prime is 1220112020093. The next prime is 1220112020209. The reversal of 1220112020111 is 1110202110221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220112020111 - 2¹⁸ = 1220111757967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220112020311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610056010055 + 610056010056.

It is an arithmetic number, because the mean of its divisors is an integer number (610056010056).

Almost surely, 2^{1220112020111} is an apocalyptic number.

1220112020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220112020111 is an equidigital number, since it uses as much as digits as its factorization.

1220112020111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220112020111 its reverse (1110202110221), we get a palindrome (2330314130332).

The spelling of 1220112020111 in words is "one trillion, two hundred twenty billion, one hundred twelve million, twenty thousand, one hundred eleven".