222120221123 has 4 divisors (see below), whose sum is σ = 222137271840. Its totient is φ = 222103170408.

The previous prime is 222120221093. The next prime is 222120221131. The reversal of 222120221123 is 321122021222.

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

It is a cyclic number.

It is not a de Polignac number, because 222120221123 - 2⁸ = 222120220867 is a prime.

It is a super-2 number, since 2×222120221123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222120221095 and 222120221104.

It is not an unprimeable number, because it can be changed into a prime (222120221143) 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, 8505803 + ... + 8531876.

It is an arithmetic number, because the mean of its divisors is an integer number (55534317960).

Almost surely, 2^222120221123 is an apocalyptic number.

222120221123 is a deficient number, since it is larger than the sum of its proper divisors (17050717).

222120221123 is a wasteful number, since it uses less digits than its factorization.

222120221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17050716.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 222120221123 its reverse (321122021222), we get a palindrome (543242242345).

The spelling of 222120221123 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, one hundred twenty-three".