1020221332 has 24 divisors (see below), whose sum is σ = 1923596136. Its totient is φ = 470658048.

The previous prime is 1020221299. The next prime is 1020221347. The reversal of 1020221332 is 2331220201.

It can be written as a sum of positive squares in 4 ways, for example, as 71334916 + 948886416 = 8446^2 + 30804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209388 + ... + 214204.

It is an arithmetic number, because the mean of its divisors is an integer number (80149839).

Almost surely, 2^1020221332 is an apocalyptic number.

It is an amenable number.

1020221332 is a deficient number, since it is larger than the sum of its proper divisors (903374804).

1020221332 is a wasteful number, since it uses less digits than its factorization.

1020221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8907 (or 8905 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1020221332 is about 31940.9037442587. The cubic root of 1020221332 is about 1006.6955140387.

Adding to 1020221332 its reverse (2331220201), we get a palindrome (3351441533).

The spelling of 1020221332 in words is "one billion, twenty million, two hundred twenty-one thousand, three hundred thirty-two".