221022222100121 has 48 divisors (see below), whose sum is σ = 251796536716032. Its totient is φ = 193697992051200.

The previous prime is 221022222100081. The next prime is 221022222100151. The reversal of 221022222100121 is 121001222220122.

It is a de Polignac number, because none of the positive numbers 2^k-221022222100121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221022222100093 and 221022222100102.

It is not an unprimeable number, because it can be changed into a prime (221022222100151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79374971 + ... + 82112303.

It is an arithmetic number, because the mean of its divisors is an integer number (5245761181584).

Almost surely, 2^{221022222100121} is an apocalyptic number.

It is an amenable number.

221022222100121 is a deficient number, since it is larger than the sum of its proper divisors (30774314615911).

221022222100121 is a wasteful number, since it uses less digits than its factorization.

221022222100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737714 (or 2737701 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221022222100121 its reverse (121001222220122), we get a palindrome (342023444320243).

The spelling of 221022222100121 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred twenty-two million, one hundred thousand, one hundred twenty-one".