1222100212111 has 2 divisors, whose sum is σ = 1222100212112. Its totient is φ = 1222100212110.

The previous prime is 1222100212031. The next prime is 1222100212129. The reversal of 1222100212111 is 1112120012221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222100212111 - 2¹⁵ = 1222100179343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222100912111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611050106055 + 611050106056.

It is an arithmetic number, because the mean of its divisors is an integer number (611050106056).

Almost surely, 2^{1222100212111} is an apocalyptic number.

1222100212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222100212111 is an equidigital number, since it uses as much as digits as its factorization.

1222100212111 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 1222100212111 its reverse (1112120012221), we get a palindrome (2334220224332).

The spelling of 1222100212111 in words is "one trillion, two hundred twenty-two billion, one hundred million, two hundred twelve thousand, one hundred eleven".