2202210021221 has 4 divisors (see below), whose sum is σ = 2516811452832. Its totient is φ = 1887608589612.

The previous prime is 2202210021127. The next prime is 2202210021293. The reversal of 2202210021221 is 1221200122022.

It is a happy number.

2202210021221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 2202210021221 - 2³⁴ = 2185030152037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2202210021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202210024221) 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, 157300715795 + ... + 157300715808.

It is an arithmetic number, because the mean of its divisors is an integer number (629202863208).

Almost surely, 2^{2202210021221} is an apocalyptic number.

It is an amenable number.

2202210021221 is a deficient number, since it is larger than the sum of its proper divisors (314601431611).

2202210021221 is an equidigital number, since it uses as much as digits as its factorization.

2202210021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314601431610.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2202210021221 its reverse (1221200122022), we get a palindrome (3423410143243).

The spelling of 2202210021221 in words is "two trillion, two hundred two billion, two hundred ten million, twenty-one thousand, two hundred twenty-one".