102212404 has 48 divisors (see below), whose sum is σ = 211115520. Its totient is φ = 42393600.

The previous prime is 102212387. The next prime is 102212417. The reversal of 102212404 is 404212201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132532 + ... + 133300.

It is an arithmetic number, because the mean of its divisors is an integer number (4398240).

Almost surely, 2^102212404 is an apocalyptic number.

102212404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102212404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105557760).

102212404 is an abundant number, since it is smaller than the sum of its proper divisors (108903116).

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

102212404 is a wasteful number, since it uses less digits than its factorization.

102212404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 102212404 is about 10110.0150346080. The cubic root of 102212404 is about 467.5569686646.

Adding to 102212404 its reverse (404212201), we get a palindrome (506424605).

The spelling of 102212404 in words is "one hundred two million, two hundred twelve thousand, four hundred four".