22202220220121 has 4 divisors (see below), whose sum is σ = 22202262297600. Its totient is φ = 22202178142644.

The previous prime is 22202220220087. The next prime is 22202220220123. The reversal of 22202220220121 is 12102202220222.

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 22202220220121 - 2⁴² = 17804173709017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22202220220093 and 22202220220102.

It is not an unprimeable number, because it can be changed into a prime (22202220220123) 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 3 ways as a sum of consecutive naturals, for example, 20237081 + ... + 21305958.

It is an arithmetic number, because the mean of its divisors is an integer number (5550565574400).

Almost surely, 2^{22202220220121} is an apocalyptic number.

It is an amenable number.

22202220220121 is a deficient number, since it is larger than the sum of its proper divisors (42077479).

22202220220121 is an equidigital number, since it uses as much as digits as its factorization.

22202220220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42077478.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22202220220121 its reverse (12102202220222), we get a palindrome (34304422440343).

The spelling of 22202220220121 in words is "twenty-two trillion, two hundred two billion, two hundred twenty million, two hundred twenty thousand, one hundred twenty-one".