1101221121229 has 2 divisors, whose sum is σ = 1101221121230. Its totient is φ = 1101221121228.

The previous prime is 1101221121197. The next prime is 1101221121257. The reversal of 1101221121229 is 9221211221011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1017471655204 + 83749466025 = 1008698^2 + 289395^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101221121229 - 2⁵ = 1101221121197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101221122229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610560614 + 550610560615.

It is an arithmetic number, because the mean of its divisors is an integer number (550610560615).

Almost surely, 2^{1101221121229} is an apocalyptic number.

It is an amenable number.

1101221121229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101221121229 is an equidigital number, since it uses as much as digits as its factorization.

1101221121229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 1101221121229 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-nine".