102021616 has 10 divisors (see below), whose sum is σ = 197666912. Its totient is φ = 51010800.

The previous prime is 102021599. The next prime is 102021643. The reversal of 102021616 is 616120201.

It is a junction number, because it is equal to n+sod(n) for n = 102021593 and 102021602.

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 as a sum of consecutive naturals, namely, 3188160 + ... + 3188191.

Almost surely, 2^102021616 is an apocalyptic number.

102021616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

102021616 is a deficient number, since it is larger than the sum of its proper divisors (95645296).

102021616 is an equidigital number, since it uses as much as digits as its factorization.

102021616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376359 (or 6376353 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 102021616 is about 10100.5750331355. The cubic root of 102021616 is about 467.2658760787.

Adding to 102021616 its reverse (616120201), we get a palindrome (718141817).

The spelling of 102021616 in words is "one hundred two million, twenty-one thousand, six hundred sixteen".