216102012 has 48 divisors (see below), whose sum is σ = 577312512. Its totient is φ = 61632000.

The previous prime is 216101999. The next prime is 216102013. The reversal of 216102012 is 210201612.

It is a junction number, because it is equal to n+sod(n) for n = 216101982 and 216102000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216102013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52012 + ... + 56012.

It is an arithmetic number, because the mean of its divisors is an integer number (12027344).

Almost surely, 2^216102012 is an apocalyptic number.

216102012 is the 12003-rd pentagonal number.

It is an amenable number.

216102012 is an abundant number, since it is smaller than the sum of its proper divisors (361210500).

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

216102012 is a wasteful number, since it uses less digits than its factorization.

216102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658 (or 4656 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 216102012 is about 14700.4085657508. The cubic root of 216102012 is about 600.0944406897.

Adding to 216102012 its reverse (210201612), we get a palindrome (426303624).

The spelling of 216102012 in words is "two hundred sixteen million, one hundred two thousand, twelve".