1101221021233 has 2 divisors, whose sum is σ = 1101221021234. Its totient is φ = 1101221021232.

The previous prime is 1101221021231. The next prime is 1101221021239. The reversal of 1101221021233 is 3321201221011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917940280464 + 183280740769 = 958092^2 + 428113^2 .

It is an emirp because it is prime and its reverse (3321201221011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1101221021233 - 2¹ = 1101221021231 is a prime.

Together with 1101221021231, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1101221021233.

It is not a weakly prime, because it can be changed into another prime (1101221021231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610510616 + 550610510617.

It is an arithmetic number, because the mean of its divisors is an integer number (550610510617).

Almost surely, 2^{1101221021233} is an apocalyptic number.

It is an amenable number.

1101221021233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101221021233 is an equidigital number, since it uses as much as digits as its factorization.

1101221021233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1101221021233 its reverse (3321201221011), we get a palindrome (4422422242244).

The spelling of 1101221021233 in words is "one trillion, one hundred one billion, two hundred twenty-one million, twenty-one thousand, two hundred thirty-three".