102221156 has 24 divisors (see below), whose sum is σ = 181880160. Its totient is φ = 50262912.

The previous prime is 102221149. The next prime is 102221179. The reversal of 102221156 is 651122201.

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 7 ways as a sum of consecutive naturals, for example, 62015 + ... + 63641.

It is an arithmetic number, because the mean of its divisors is an integer number (7578340).

Almost surely, 2^102221156 is an apocalyptic number.

It is an amenable number.

102221156 is a deficient number, since it is larger than the sum of its proper divisors (79659004).

102221156 is a wasteful number, since it uses less digits than its factorization.

102221156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883 (or 1881 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 102221156 is about 10110.4478634727. The cubic root of 102221156 is about 467.5703132348.

Adding to 102221156 its reverse (651122201), we get a palindrome (753343357).

The spelling of 102221156 in words is "one hundred two million, two hundred twenty-one thousand, one hundred fifty-six".