1021104450 has 144 divisors (see below), whose sum is σ = 2808023400. Its totient is φ = 265973760.

The previous prime is 1021104449. The next prime is 1021104451. The reversal of 1021104450 is 544011201.

1021104450 is a `hidden beast` number, since 1 + 0 + 211 + 0 + 4 + 450 = 666.

1021104450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1021104449) and next prime (1021104451).

It can be written as a sum of positive squares in 12 ways, for example, as 10055241 + 1011049209 = 3171^2 + 31797^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021104451) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6503772 + ... + 6503928.

Almost surely, 2^1021104450 is an apocalyptic number.

1021104450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021104450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404011700).

1021104450 is an abundant number, since it is smaller than the sum of its proper divisors (1786918950).

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

1021104450 is a wasteful number, since it uses less digits than its factorization.

1021104450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1021104450 is about 31954.7250027285. The cubic root of 1021104450 is about 1006.9859002209.

Adding to 1021104450 its reverse (544011201), we get a palindrome (1565115651).

The spelling of 1021104450 in words is "one billion, twenty-one million, one hundred four thousand, four hundred fifty".