1011021204 has 12 divisors (see below), whose sum is σ = 2359049504. Its totient is φ = 337007064.

The previous prime is 1011021199. The next prime is 1011021233. The reversal of 1011021204 is 4021201101.

It is a happy number.

1011021204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 84251767 = 1011021204 / (1 + 0 + 1 + 1 + 0 + 2 + 1 + 2 + 0 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 1011021204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42125872 + ... + 42125895.

Almost surely, 2^1011021204 is an apocalyptic number.

It is an amenable number.

1011021204 is an abundant number, since it is smaller than the sum of its proper divisors (1348028300).

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

1011021204 is a wasteful number, since it uses less digits than its factorization.

1011021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84251774 (or 84251772 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1011021204 is about 31796.5596252173. The cubic root of 1011021204 is about 1003.6603203745.

Adding to 1011021204 its reverse (4021201101), we get a palindrome (5032222305).

The spelling of 1011021204 in words is "one billion, eleven million, twenty-one thousand, two hundred four".