11212122112011 has 12 divisors (see below), whose sum is σ = 16196000391792. Its totient is φ = 7474419045456.

The previous prime is 11212122111979. The next prime is 11212122112013. The reversal of 11212122112011 is 11021122121211.

It is a happy number.

It is not a de Polignac number, because 11212122112011 - 2⁵ = 11212122111979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212122112013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27203196 + ... + 27612281.

It is an arithmetic number, because the mean of its divisors is an integer number (1349666699316).

Almost surely, 2^{11212122112011} is an apocalyptic number.

11212122112011 is a deficient number, since it is larger than the sum of its proper divisors (4983878279781).

11212122112011 is a wasteful number, since it uses less digits than its factorization.

11212122112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54838210 (or 54838207 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11212122112011 its reverse (11021122121211), we get a palindrome (22233244233222).

The spelling of 11212122112011 in words is "eleven trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twelve thousand, eleven".