1101211222011 has 32 divisors (see below), whose sum is σ = 1607139456000. Its totient is φ = 668039436288.

The previous prime is 1101211221967. The next prime is 1101211222043. The reversal of 1101211222011 is 1102221121011.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1101211222011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101211222061) 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 in 31 ways as a sum of consecutive naturals, for example, 1406851 + ... + 2044908.

It is an arithmetic number, because the mean of its divisors is an integer number (50223108000).

Almost surely, 2^{1101211222011} is an apocalyptic number.

1101211222011 is a deficient number, since it is larger than the sum of its proper divisors (505928233989).

1101211222011 is a wasteful number, since it uses less digits than its factorization.

1101211222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452003.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1101211222011 its reverse (1102221121011), we get a palindrome (2203432343022).

The spelling of 1101211222011 in words is "one trillion, one hundred one billion, two hundred eleven million, two hundred twenty-two thousand, eleven".