1021221096 has 64 divisors (see below), whose sum is σ = 3011911680. Its totient is φ = 282363840.

The previous prime is 1021221077. The next prime is 1021221133. The reversal of 1021221096 is 6901221201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 92836 + ... + 103251.

It is an arithmetic number, because the mean of its divisors is an integer number (47061120).

Almost surely, 2^1021221096 is an apocalyptic number.

It is an amenable number.

1021221096 is an abundant number, since it is smaller than the sum of its proper divisors (1990690584).

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

1021221096 is a wasteful number, since it uses less digits than its factorization.

1021221096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196134 (or 196130 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1021221096 is about 31956.5501266955. The cubic root of 1021221096 is about 1007.0242431495.

Adding to 1021221096 its reverse (6901221201), we get a palindrome (7922442297).

The spelling of 1021221096 in words is "one billion, twenty-one million, two hundred twenty-one thousand, ninety-six".