22211001011221 has 16 divisors (see below), whose sum is σ = 25053136532928. Its totient is φ = 19515229724800.

The previous prime is 22211001011219. The next prime is 22211001011261. The reversal of 22211001011221 is 12211010011222.

It is not a de Polignac number, because 22211001011221 - 2¹ = 22211001011219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22211001011195 and 22211001011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211001011261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230084170 + ... + 230180683.

It is an arithmetic number, because the mean of its divisors is an integer number (1565821033308).

Almost surely, 2^{22211001011221} is an apocalyptic number.

It is an amenable number.

22211001011221 is a deficient number, since it is larger than the sum of its proper divisors (2842135521707).

22211001011221 is a wasteful number, since it uses less digits than its factorization.

22211001011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460265012.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22211001011221 its reverse (12211010011222), we get a palindrome (34422011022443).

Subtracting from 22211001011221 its reverse (12211010011222), we obtain a palindrome (9999990999999).

The spelling of 22211001011221 in words is "twenty-two trillion, two hundred eleven billion, one million, eleven thousand, two hundred twenty-one".