11222110021 has 4 divisors (see below), whose sum is σ = 11710027872. Its totient is φ = 10734192172.

The previous prime is 11222110013. The next prime is 11222110061. The reversal of 11222110021 is 12001122211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12001122211 = 13 ⋅923163247.

It is a cyclic number.

It is not a de Polignac number, because 11222110021 - 2³ = 11222110013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11222109983 and 11222110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222110001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243958891 + ... + 243958936.

It is an arithmetic number, because the mean of its divisors is an integer number (2927506968).

Almost surely, 2^11222110021 is an apocalyptic number.

It is an amenable number.

11222110021 is a deficient number, since it is larger than the sum of its proper divisors (487917851).

11222110021 is an equidigital number, since it uses as much as digits as its factorization.

11222110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487917850.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11222110021 its reverse (12001122211), we get a palindrome (23223232232).

The spelling of 11222110021 in words is "eleven billion, two hundred twenty-two million, one hundred ten thousand, twenty-one".