1090221024 has 144 divisors (see below), whose sum is σ = 3009899088. Its totient is φ = 345366528.

The previous prime is 1090221017. The next prime is 1090221043. The reversal of 1090221024 is 4201220901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11239344 + ... + 11239440.

It is an arithmetic number, because the mean of its divisors is an integer number (20902077).

Almost surely, 2^1090221024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1090221024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504949544).

1090221024 is an abundant number, since it is smaller than the sum of its proper divisors (1919678064).

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

1090221024 is an equidigital number, since it uses as much as digits as its factorization.

1090221024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1090221024 is about 33018.4951807317. The cubic root of 1090221024 is about 1029.2120230888.

Adding to 1090221024 its reverse (4201220901), we get a palindrome (5291441925).

The spelling of 1090221024 in words is "one billion, ninety million, two hundred twenty-one thousand, twenty-four".