1021001104 has 20 divisors (see below), whose sum is σ = 1995699276. Its totient is φ = 505981952.

The previous prime is 1021001099. The next prime is 1021001117. The reversal of 1021001104 is 4011001201.

It can be written as a sum of positive squares in 2 ways, for example, as 194323600 + 826677504 = 13940^2 + 28752^2 .

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 3 ways as a sum of consecutive naturals, for example, 280549 + ... + 284164.

Almost surely, 2^1021001104 is an apocalyptic number.

It is an amenable number.

1021001104 is a deficient number, since it is larger than the sum of its proper divisors (974698172).

1021001104 is a wasteful number, since it uses less digits than its factorization.

1021001104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564834 (or 564828 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1021001104 is about 31953.1078926605. The cubic root of 1021001104 is about 1006.9519267210.

Adding to 1021001104 its reverse (4011001201), we get a palindrome (5032002305).

The spelling of 1021001104 in words is "one billion, twenty-one million, one thousand, one hundred four".