1061221304 has 96 divisors (see below), whose sum is σ = 2374050000. Its totient is φ = 444375360.

The previous prime is 1061221303. The next prime is 1061221321. The reversal of 1061221304 is 4031221601.

It is a super-2 number, since 2×1061221304² = 2252381312126920832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061221303) 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 23 ways as a sum of consecutive naturals, for example, 2126447 + ... + 2126945.

Almost surely, 2^1061221304 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 1061221304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187025000).

1061221304 is an abundant number, since it is smaller than the sum of its proper divisors (1312828696).

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

1061221304 is a wasteful number, since it uses less digits than its factorization.

1061221304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1061221304 is about 32576.3918198440. The cubic root of 1061221304 is about 1020.0042624453.

Adding to 1061221304 its reverse (4031221601), we get a palindrome (5092442905).

The spelling of 1061221304 in words is "one billion, sixty-one million, two hundred twenty-one thousand, three hundred four".