11022110021 has 12 divisors (see below), whose sum is σ = 12609274692. Its totient is φ = 9575766528.

The previous prime is 11022110003. The next prime is 11022110027. The reversal of 11022110021 is 12001122011.

It can be written as a sum of positive squares in 6 ways, for example, as 2188929796 + 8833180225 = 46786^2 + 93985^2 .

It is not a de Polignac number, because 11022110021 - 2¹⁰ = 11022108997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11022109984 and 11022110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022110027) 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, 1463120 + ... + 1470633.

It is an arithmetic number, because the mean of its divisors is an integer number (1050772891).

Almost surely, 2^11022110021 is an apocalyptic number.

It is an amenable number.

11022110021 is a deficient number, since it is larger than the sum of its proper divisors (1587164671).

11022110021 is a wasteful number, since it uses less digits than its factorization.

11022110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933800 (or 2933783 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11022110021 its reverse (12001122011), we get a palindrome (23023232032).

The spelling of 11022110021 in words is "eleven billion, twenty-two million, one hundred ten thousand, twenty-one".