102216252 has 12 divisors (see below), whose sum is σ = 238504616. Its totient is φ = 34072080.

The previous prime is 102216251. The next prime is 102216253. The reversal of 102216252 is 252612201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102216251) and next prime (102216253).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102216251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4258999 + ... + 4259022.

Almost surely, 2^102216252 is an apocalyptic number.

102216252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102216252 is an abundant number, since it is smaller than the sum of its proper divisors (136288364).

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

102216252 is a wasteful number, since it uses less digits than its factorization.

102216252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8518028 (or 8518026 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 102216252 is about 10110.2053391610. The cubic root of 102216252 is about 467.5628359780.

Adding to 102216252 its reverse (252612201), we get a palindrome (354828453).

The spelling of 102216252 in words is "one hundred two million, two hundred sixteen thousand, two hundred fifty-two".