2222021121 has 8 divisors (see below), whose sum is σ = 2975633280. Its totient is φ = 1474878192.

The previous prime is 2222021059. The next prime is 2222021161. The reversal of 2222021121 is 1211202222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2222021121 - 2⁷ = 2222020993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2222021121.

It is not an unprimeable number, because it can be changed into a prime (2222021161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1616505 + ... + 1617878.

It is an arithmetic number, because the mean of its divisors is an integer number (371954160).

Almost surely, 2^2222021121 is an apocalyptic number.

It is an amenable number.

2222021121 is a deficient number, since it is larger than the sum of its proper divisors (753612159).

2222021121 is a wasteful number, since it uses less digits than its factorization.

2222021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234615.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2222021121 is about 47138.3190302751. The cubic root of 2222021121 is about 1304.9165149688.

Adding to 2222021121 its reverse (1211202222), we get a palindrome (3433223343).

The spelling of 2222021121 in words is "two billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty-one".