222123122101 has 4 divisors (see below), whose sum is σ = 222201420012. Its totient is φ = 222044824192.

The previous prime is 222123122099. The next prime is 222123122131. The reversal of 222123122101 is 101221321222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2846329201 + 219276792900 = 53351^2 + 468270^2 .

It is a cyclic number.

It is not a de Polignac number, because 222123122101 - 2¹ = 222123122099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222123122131) 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, 39144700 + ... + 39150373.

It is an arithmetic number, because the mean of its divisors is an integer number (55550355003).

Almost surely, 2^222123122101 is an apocalyptic number.

It is an amenable number.

222123122101 is a deficient number, since it is larger than the sum of its proper divisors (78297911).

222123122101 is an equidigital number, since it uses as much as digits as its factorization.

222123122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78297910.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 222123122101 its reverse (101221321222), we get a palindrome (323344443323).

The spelling of 222123122101 in words is "two hundred twenty-two billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred one".