1101211211 has 4 divisors (see below), whose sum is σ = 1107967272. Its totient is φ = 1094455152.

The previous prime is 1101211187. The next prime is 1101211219. The reversal of 1101211211 is 1121121011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1121121011 = 19 ⋅59006369.

It is a cyclic number.

It is not a de Polignac number, because 1101211211 - 2²⁶ = 1034102347 is a prime.

It is a super-2 number, since 2×1101211211² = 2425332262464173042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101211192 and 1101211201.

It is not an unprimeable number, because it can be changed into a prime (1101211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3377786 + ... + 3378111.

It is an arithmetic number, because the mean of its divisors is an integer number (276991818).

Almost surely, 2^1101211211 is an apocalyptic number.

1101211211 is a deficient number, since it is larger than the sum of its proper divisors (6756061).

1101211211 is an equidigital number, since it uses as much as digits as its factorization.

1101211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756060.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 1101211211 is about 33184.5025727372. The cubic root of 1101211211 is about 1032.6588580036.

Adding to 1101211211 its reverse (1121121011), we get a palindrome (2222332222).

The spelling of 1101211211 in words is "one billion, one hundred one million, two hundred eleven thousand, two hundred eleven".