1101221102011 has 32 divisors (see below), whose sum is σ = 1274031313920. Its totient is φ = 945247449600.

The previous prime is 1101221101997. The next prime is 1101221102063. The reversal of 1101221102011 is 1102011221011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1101221102011 - 2⁵ = 1101221101979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101221101982 and 1101221102000.

It is not an unprimeable number, because it can be changed into a prime (1101221102711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331456 + ... + 1520626.

It is an arithmetic number, because the mean of its divisors is an integer number (39813478560).

Almost surely, 2^{1101221102011} is an apocalyptic number.

1101221102011 is a deficient number, since it is larger than the sum of its proper divisors (172810211909).

1101221102011 is a wasteful number, since it uses less digits than its factorization.

1101221102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189315.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1101221102011 its reverse (1102011221011), we get a palindrome (2203232323022).

The spelling of 1101221102011 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred two thousand, eleven".