2222201011221 has 24 divisors (see below), whose sum is σ = 3436052724000. Its totient is φ = 1379707312032.

The previous prime is 2222201011181. The next prime is 2222201011243. The reversal of 2222201011221 is 1221101022222.

It is a happy number.

2222201011221 is a `hidden beast` number, since 222 + 220 + 1 + 0 + 1 + 1 + 221 = 666.

It is not a de Polignac number, because 2222201011221 - 2¹⁴ = 2222200994837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222201011194 and 2222201011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222201011421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110119806 + ... + 110139983.

It is an arithmetic number, because the mean of its divisors is an integer number (143168863500).

Almost surely, 2^{2222201011221} is an apocalyptic number.

It is an amenable number.

2222201011221 is a deficient number, since it is larger than the sum of its proper divisors (1213851712779).

2222201011221 is a wasteful number, since it uses less digits than its factorization.

2222201011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220259873 (or 220259870 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2222201011221 its reverse (1221101022222), we get a palindrome (3443302033443).

The spelling of 2222201011221 in words is "two trillion, two hundred twenty-two billion, two hundred one million, eleven thousand, two hundred twenty-one".