65221002 has 48 divisors (see below), whose sum is σ = 176185152. Its totient is φ = 16940160.

The previous prime is 65220979. The next prime is 65221043. The reversal of 65221002 is 20012256.

65221002 is a `hidden beast` number, since 652 + 2 + 10 + 0 + 2 = 666.

65221002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 22143 + ... + 24914.

It is an arithmetic number, because the mean of its divisors is an integer number (3670524).

Almost surely, 2^65221002 is an apocalyptic number.

65221002 is an abundant number, since it is smaller than the sum of its proper divisors (110964150).

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

65221002 is a wasteful number, since it uses less digits than its factorization.

65221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47083 (or 47080 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 65221002 is about 8075.9520800956. The cubic root of 65221002 is about 402.5277467595.

Adding to 65221002 its reverse (20012256), we get a palindrome (85233258).

The spelling of 65221002 in words is "sixty-five million, two hundred twenty-one thousand, two".