22011111011021 has 4 divisors (see below), whose sum is σ = 24012121102944. Its totient is φ = 20010100919100.

The previous prime is 22011111011011. The next prime is 22011111011039. The reversal of 22011111011021 is 12011011111022.

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.

It is a cyclic number.

It is not a de Polignac number, because 22011111011021 - 2⁶ = 22011111010957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22011111010987 and 22011111011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011111011011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000505045945 + ... + 1000505045966.

It is an arithmetic number, because the mean of its divisors is an integer number (6003030275736).

Almost surely, 2^{22011111011021} is an apocalyptic number.

It is an amenable number.

22011111011021 is a deficient number, since it is larger than the sum of its proper divisors (2001010091923).

22011111011021 is a wasteful number, since it uses less digits than its factorization.

22011111011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001010091922.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 22011111011021 its reverse (12011011111022), we get a palindrome (34022122122043).

The spelling of 22011111011021 in words is "twenty-two trillion, eleven billion, one hundred eleven million, eleven thousand, twenty-one".