22102010022221 has 4 divisors (see below), whose sum is σ = 22147024299744. Its totient is φ = 22056995744700.

The previous prime is 22102010022151. The next prime is 22102010022263. The reversal of 22102010022221 is 12222001020122.

It is a happy number.

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 22102010022221 - 2¹⁴ = 22102010005837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22102010022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102010042221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22507138025 + ... + 22507139006.

It is an arithmetic number, because the mean of its divisors is an integer number (5536756074936).

Almost surely, 2^{22102010022221} is an apocalyptic number.

It is an amenable number.

22102010022221 is a deficient number, since it is larger than the sum of its proper divisors (45014277523).

22102010022221 is an equidigital number, since it uses as much as digits as its factorization.

22102010022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45014277522.

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

Adding to 22102010022221 its reverse (12222001020122), we get a palindrome (34324011042343).

The spelling of 22102010022221 in words is "twenty-two trillion, one hundred two billion, ten million, twenty-two thousand, two hundred twenty-one".