11100121221212 has 24 divisors (see below), whose sum is σ = 19900430291952. Its totient is φ = 5414303484800.

The previous prime is 11100121221191. The next prime is 11100121221223. The reversal of 11100121221212 is 21212212100111.

It is a super-2 number, since 2×11100121221212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 144563 + ... + 4713930.

It is an arithmetic number, because the mean of its divisors is an integer number (829184595498).

Almost surely, 2^{11100121221212} is an apocalyptic number.

It is an amenable number.

11100121221212 is a deficient number, since it is larger than the sum of its proper divisors (8800309070740).

11100121221212 is a wasteful number, since it uses less digits than its factorization.

11100121221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872469 (or 4872467 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11100121221212 its reverse (21212212100111), we get a palindrome (32312333321323).

The spelling of 11100121221212 in words is "eleven trillion, one hundred billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twelve".