22000111020021 has 4 divisors (see below), whose sum is σ = 29333481360032. Its totient is φ = 14666740680012.

The previous prime is 22000111019977. The next prime is 22000111020089. The reversal of 22000111020021 is 12002011100022.

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 not a de Polignac number, because 22000111020021 - 2¹³ = 22000111011829 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 = 22000111019979 and 22000111020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000111020721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3666685170001 + ... + 3666685170006.

It is an arithmetic number, because the mean of its divisors is an integer number (7333370340008).

Almost surely, 2^{22000111020021} is an apocalyptic number.

It is an amenable number.

22000111020021 is a deficient number, since it is larger than the sum of its proper divisors (7333370340011).

22000111020021 is an equidigital number, since it uses as much as digits as its factorization.

22000111020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333370340010.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22000111020021 its reverse (12002011100022), we get a palindrome (34002122120043).

The spelling of 22000111020021 in words is "twenty-two trillion, one hundred eleven million, twenty thousand, twenty-one".