1021566002 has 16 divisors (see below), whose sum is σ = 1608595200. Its totient is φ = 485926320.

The previous prime is 1021566001. The next prime is 1021566011. The reversal of 1021566002 is 2006651201.

It is not an unprimeable number, because it can be changed into a prime (1021566001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135977 + ... + 143292.

It is an arithmetic number, because the mean of its divisors is an integer number (100537200).

Almost surely, 2^1021566002 is an apocalyptic number.

1021566002 is a deficient number, since it is larger than the sum of its proper divisors (587029198).

1021566002 is a wasteful number, since it uses less digits than its factorization.

1021566002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279361.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1021566002 is about 31961.9461547635. The cubic root of 1021566002 is about 1007.1376007793.

The spelling of 1021566002 in words is "one billion, twenty-one million, five hundred sixty-six thousand, two".