11122531211 has 16 divisors (see below), whose sum is σ = 12587758560. Its totient is φ = 9734968320.

The previous prime is 11122531207. The next prime is 11122531219. The reversal of 11122531211 is 11213522111.

It is not a de Polignac number, because 11122531211 - 2² = 11122531207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11122531219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63221 + ... + 161993.

It is an arithmetic number, because the mean of its divisors is an integer number (786734910).

Almost surely, 2^11122531211 is an apocalyptic number.

11122531211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11122531211 is a deficient number, since it is larger than the sum of its proper divisors (1465227349).

11122531211 is a wasteful number, since it uses less digits than its factorization.

11122531211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99166.

The product of its digits is 120, while the sum is 20.

The spelling of 11122531211 in words is "eleven billion, one hundred twenty-two million, five hundred thirty-one thousand, two hundred eleven".