1021021104 has 40 divisors (see below), whose sum is σ = 2642442480. Its totient is φ = 339720448.

The previous prime is 1021021103. The next prime is 1021021121. The reversal of 1021021104 is 4011201201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1021021104.

It is not an unprimeable number, because it can be changed into a prime (1021021103) 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, 7642 + ... + 45830.

It is an arithmetic number, because the mean of its divisors is an integer number (66061062).

Almost surely, 2^1021021104 is an apocalyptic number.

It is an amenable number.

1021021104 is an abundant number, since it is smaller than the sum of its proper divisors (1621421376).

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

1021021104 is a wasteful number, since it uses less digits than its factorization.

1021021104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38757 (or 38751 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1021021104 is about 31953.4208497306. The cubic root of 1021021104 is about 1006.9585016101.

Adding to 1021021104 its reverse (4011201201), we get a palindrome (5032222305).

The spelling of 1021021104 in words is "one billion, twenty-one million, twenty-one thousand, one hundred four".