222131012123 has 16 divisors (see below), whose sum is σ = 223565166720. Its totient is φ = 220703246976.

The previous prime is 222131012041. The next prime is 222131012137. The reversal of 222131012123 is 321210131222.

It is a cyclic number.

It is not a de Polignac number, because 222131012123 - 2¹² = 222131008027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222131012095 and 222131012104.

It is not an unprimeable number, because it can be changed into a prime (222131014123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217988708 + ... + 217989726.

It is an arithmetic number, because the mean of its divisors is an integer number (13972822920).

Almost surely, 2^222131012123 is an apocalyptic number.

222131012123 is a deficient number, since it is larger than the sum of its proper divisors (1434154597).

222131012123 is a wasteful number, since it uses less digits than its factorization.

222131012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 222131012123 its reverse (321210131222), we get a palindrome (543341143345).

The spelling of 222131012123 in words is "two hundred twenty-two billion, one hundred thirty-one million, twelve thousand, one hundred twenty-three".