1013221204 has 6 divisors (see below), whose sum is σ = 1773137114. Its totient is φ = 506610600.

The previous prime is 1013221171. The next prime is 1013221211. The reversal of 1013221204 is 4021223101.

It can be written as a sum of positive squares in only one way, i.e., 578498704 + 434722500 = 24052^2 + 20850^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126652647 + ... + 126652654.

Almost surely, 2^1013221204 is an apocalyptic number.

It is an amenable number.

1013221204 is a deficient number, since it is larger than the sum of its proper divisors (759915910).

1013221204 is a wasteful number, since it uses less digits than its factorization.

1013221204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253305305 (or 253305303 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1013221204 is about 31831.1357635885. The cubic root of 1013221204 is about 1004.3877871649.

Adding to 1013221204 its reverse (4021223101), we get a palindrome (5034444305).

The spelling of 1013221204 in words is "one billion, thirteen million, two hundred twenty-one thousand, two hundred four".