102123228444 has 96 divisors (see below), whose sum is σ = 261762036480. Its totient is φ = 30844111872.

The previous prime is 102123228439. The next prime is 102123228479. The reversal of 102123228444 is 444822321201.

It is a happy number.

It is a super-2 number, since 2×102123228444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2027979 + ... + 2077725.

It is an arithmetic number, because the mean of its divisors is an integer number (2726687880).

Almost surely, 2^102123228444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102123228444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130881018240).

102123228444 is an abundant number, since it is smaller than the sum of its proper divisors (159638808036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102123228444 is a wasteful number, since it uses less digits than its factorization.

102123228444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50147 (or 50145 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

Adding to 102123228444 its reverse (444822321201), we get a palindrome (546945549645).

The spelling of 102123228444 in words is "one hundred two billion, one hundred twenty-three million, two hundred twenty-eight thousand, four hundred forty-four".