102102212028 has 96 divisors (see below), whose sum is σ = 255727080000. Its totient is φ = 31642361856.

The previous prime is 102102212011. The next prime is 102102212059. The reversal of 102102212028 is 820212201201.

It is a junction number, because it is equal to n+sod(n) for n = 102102211995 and 102102212013.

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, 1208098 + ... + 1289846.

It is an arithmetic number, because the mean of its divisors is an integer number (2663823750).

Almost surely, 2^102102212028 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 102102212028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127863540000).

102102212028 is an abundant number, since it is smaller than the sum of its proper divisors (153624867972).

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

102102212028 is a wasteful number, since it uses less digits than its factorization.

102102212028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81919 (or 81917 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 102102212028 its reverse (820212201201), we get a palindrome (922314413229).

The spelling of 102102212028 in words is "one hundred two billion, one hundred two million, two hundred twelve thousand, twenty-eight".