222120112123 has 32 divisors (see below), whose sum is σ = 287949401600. Its totient is φ = 166388173056.

The previous prime is 222120112079. The next prime is 222120112127. The reversal of 222120112123 is 321211021222.

It is not a de Polignac number, because 222120112123 - 2¹⁷ = 222119981051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 222120112123.

It is not an unprimeable number, because it can be changed into a prime (222120112127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2742040 + ... + 2821882.

It is an arithmetic number, because the mean of its divisors is an integer number (8998418800).

Almost surely, 2^222120112123 is an apocalyptic number.

222120112123 is a deficient number, since it is larger than the sum of its proper divisors (65829289477).

222120112123 is a wasteful number, since it uses less digits than its factorization.

222120112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81491.

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

Adding to 222120112123 its reverse (321211021222), we get a palindrome (543331133345).

Subtracting 222120112123 from its reverse (321211021222), we obtain a palindrome (99090909099).

The spelling of 222120112123 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred twelve thousand, one hundred twenty-three".