222221002120123 has 4 divisors (see below), whose sum is σ = 222221062711648. Its totient is φ = 222220941528600.

The previous prime is 222221002120121. The next prime is 222221002120157. The reversal of 222221002120123 is 321021200122222.

It is a happy number.

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 222221002120123 - 2¹ = 222221002120121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222221002120094 and 222221002120103.

It is not an unprimeable number, because it can be changed into a prime (222221002120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24413811 + ... + 32256412.

It is an arithmetic number, because the mean of its divisors is an integer number (55555265677912).

Almost surely, 2^{222221002120123} is an apocalyptic number.

222221002120123 is a deficient number, since it is larger than the sum of its proper divisors (60591525).

222221002120123 is an equidigital number, since it uses as much as digits as its factorization.

222221002120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60591524.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 222221002120123 its reverse (321021200122222), we get a palindrome (543242202242345).

The spelling of 222221002120123 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two million, one hundred twenty thousand, one hundred twenty-three".