22102112220121 has 4 divisors (see below), whose sum is σ = 22102123118544. Its totient is φ = 22102101321700.

The previous prime is 22102112220103. The next prime is 22102112220127. The reversal of 22102112220121 is 12102221120122.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22102112220121 - 2⁹ = 22102112219609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22102112220127) 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, 1408375 + ... + 6796156.

It is an arithmetic number, because the mean of its divisors is an integer number (5525530779636).

Almost surely, 2^{22102112220121} is an apocalyptic number.

It is an amenable number.

22102112220121 is a deficient number, since it is larger than the sum of its proper divisors (10898423).

22102112220121 is an equidigital number, since it uses as much as digits as its factorization.

22102112220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10898422.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22102112220121 its reverse (12102221120122), we get a palindrome (34204333340243).

The spelling of 22102112220121 in words is "twenty-two trillion, one hundred two billion, one hundred twelve million, two hundred twenty thousand, one hundred twenty-one".