1211001102229 has 2 divisors, whose sum is σ = 1211001102230. Its totient is φ = 1211001102228.

The previous prime is 1211001102197. The next prime is 1211001102257. The reversal of 1211001102229 is 9222011001121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1044698631025 + 166302471204 = 1022105^2 + 407802^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211001102229 - 2⁵ = 1211001102197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4211001102229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605500551114 + 605500551115.

It is an arithmetic number, because the mean of its divisors is an integer number (605500551115).

Almost surely, 2^{1211001102229} is an apocalyptic number.

It is an amenable number.

1211001102229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211001102229 is an equidigital number, since it uses as much as digits as its factorization.

1211001102229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 1211001102229 in words is "one trillion, two hundred eleven billion, one million, one hundred two thousand, two hundred twenty-nine".