22002222221021 has 4 divisors (see below), whose sum is σ = 25145396824032. Its totient is φ = 18859047618012.

The previous prime is 22002222220999. The next prime is 22002222221033. The reversal of 22002222221021 is 12012222220022.

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 22002222221021 - 2¹⁰ = 22002222219997 is a prime.

It is a super-3 number, since 3×22002222221021³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22002222220984 and 22002222221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002222221921) 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, 1571587301495 + ... + 1571587301508.

It is an arithmetic number, because the mean of its divisors is an integer number (6286349206008).

Almost surely, 2^{22002222221021} is an apocalyptic number.

It is an amenable number.

22002222221021 is a deficient number, since it is larger than the sum of its proper divisors (3143174603011).

22002222221021 is an equidigital number, since it uses as much as digits as its factorization.

22002222221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143174603010.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22002222221021 its reverse (12012222220022), we get a palindrome (34014444441043).

Subtracting from 22002222221021 its reverse (12012222220022), we obtain a palindrome (9990000000999).

The spelling of 22002222221021 in words is "twenty-two trillion, two billion, two hundred twenty-two million, two hundred twenty-one thousand, twenty-one".