102111282 has 192 divisors, whose sum is σ = 305061120. Its totient is φ = 23887872.

The previous prime is 102111259. The next prime is 102111293. The reversal of 102111282 is 282111201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 528978 + ... + 529170.

It is an arithmetic number, because the mean of its divisors is an integer number (1588860).

Almost surely, 2^102111282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102111282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152530560).

102111282 is an abundant number, since it is smaller than the sum of its proper divisors (202949838).

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

102111282 is a wasteful number, since it uses less digits than its factorization.

102111282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 102111282 is about 10105.0127164690. The cubic root of 102111282 is about 467.4027281012.

Adding to 102111282 its reverse (282111201), we get a palindrome (384222483).

The spelling of 102111282 in words is "one hundred two million, one hundred eleven thousand, two hundred eighty-two".