1101221023211 has 2 divisors, whose sum is σ = 1101221023212. Its totient is φ = 1101221023210.

The previous prime is 1101221023187. The next prime is 1101221023213. The reversal of 1101221023211 is 1123201221011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1101221023211 - 2²⁶ = 1101153914347 is a prime.

Together with 1101221023213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1101221023211.

It is not a weakly prime, because it can be changed into another prime (1101221023213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610511605 + 550610511606.

It is an arithmetic number, because the mean of its divisors is an integer number (550610511606).

Almost surely, 2^{1101221023211} is an apocalyptic number.

1101221023211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101221023211 is an equidigital number, since it uses as much as digits as its factorization.

1101221023211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1101221023211 its reverse (1123201221011), we get a palindrome (2224422244222).

The spelling of 1101221023211 in words is "one trillion, one hundred one billion, two hundred twenty-one million, twenty-three thousand, two hundred eleven".