102112221123 has 24 divisors (see below), whose sum is σ = 161034375216. Its totient is φ = 61836091200.

The previous prime is 102112221089. The next prime is 102112221149. The reversal of 102112221123 is 321122211201.

It is not a de Polignac number, because 102112221123 - 2⁸ = 102112220867 is a prime.

It is a super-2 number, since 2×102112221123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102112221096 and 102112221105.

It is not an unprimeable number, because it can be changed into a prime (102112221173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294448 + ... + 539373.

It is an arithmetic number, because the mean of its divisors is an integer number (6709765634).

Almost surely, 2^102112221123 is an apocalyptic number.

102112221123 is a deficient number, since it is larger than the sum of its proper divisors (58922154093).

102112221123 is a wasteful number, since it uses less digits than its factorization.

102112221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835075 (or 835072 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 102112221123 its reverse (321122211201), we get a palindrome (423234432324).

The spelling of 102112221123 in words is "one hundred two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twenty-three".