222211021021 has 16 divisors (see below), whose sum is σ = 244219691520. Its totient is φ = 200504389680.

The previous prime is 222211021013. The next prime is 222211021049. The reversal of 222211021021 is 120120112222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222211021021 - 2³ = 222211021013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222211020986 and 222211021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222211021091) 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 15 ways as a sum of consecutive naturals, for example, 6599190 + ... + 6632776.

It is an arithmetic number, because the mean of its divisors is an integer number (15263730720).

Almost surely, 2^222211021021 is an apocalyptic number.

It is an amenable number.

222211021021 is a deficient number, since it is larger than the sum of its proper divisors (22008670499).

222211021021 is a wasteful number, since it uses less digits than its factorization.

222211021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38064.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222211021021 its reverse (120120112222), we get a palindrome (342331133243).

The spelling of 222211021021 in words is "two hundred twenty-two billion, two hundred eleven million, twenty-one thousand, twenty-one".