11000805021 has 16 divisors (see below), whose sum is σ = 16312470720. Its totient is φ = 7327128240.

The previous prime is 11000805019. The next prime is 11000805059. The reversal of 11000805021 is 12050800011.

It is not a de Polignac number, because 11000805021 - 2¹ = 11000805019 is a prime.

It is a super-2 number, since 2×11000805021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11000804985 and 11000805003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000805061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157270 + ... + 216183.

It is an arithmetic number, because the mean of its divisors is an integer number (1019529420).

Almost surely, 2^11000805021 is an apocalyptic number.

It is an amenable number.

11000805021 is a deficient number, since it is larger than the sum of its proper divisors (5311665699).

11000805021 is a wasteful number, since it uses less digits than its factorization.

11000805021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374553 (or 374547 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The spelling of 11000805021 in words is "eleven billion, eight hundred five thousand, twenty-one".