1222100121211 has 2 divisors, whose sum is σ = 1222100121212. Its totient is φ = 1222100121210.

The previous prime is 1222100121149. The next prime is 1222100121257. The reversal of 1222100121211 is 1121210012221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222100121211 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222100121311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611050060605 + 611050060606.

It is an arithmetic number, because the mean of its divisors is an integer number (611050060606).

Almost surely, 2^{1222100121211} is an apocalyptic number.

1222100121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222100121211 is an equidigital number, since it uses as much as digits as its factorization.

1222100121211 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 1222100121211 its reverse (1121210012221), we get a palindrome (2343310133432).

The spelling of 1222100121211 in words is "one trillion, two hundred twenty-two billion, one hundred million, one hundred twenty-one thousand, two hundred eleven".