11112011022021 has 48 divisors (see below), whose sum is σ = 18387826531200. Its totient is φ = 5844485387520.

The previous prime is 11112011022001. The next prime is 11112011022173. The reversal of 11112011022021 is 12022011021111.

It is a happy number.

It is not a de Polignac number, because 11112011022021 - 2¹⁰ = 11112011020997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112011022001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3247110 + ... + 5724311.

It is an arithmetic number, because the mean of its divisors is an integer number (383079719400).

Almost surely, 2^{11112011022021} is an apocalyptic number.

It is an amenable number.

11112011022021 is a deficient number, since it is larger than the sum of its proper divisors (7275815509179).

11112011022021 is a wasteful number, since it uses less digits than its factorization.

11112011022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8971806 (or 8971793 counting only the distinct ones).

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

Adding to 11112011022021 its reverse (12022011021111), we get a palindrome (23134022043132).

The spelling of 11112011022021 in words is "eleven trillion, one hundred twelve billion, eleven million, twenty-two thousand, twenty-one".