1021213204 has 12 divisors (see below), whose sum is σ = 1949588928. Its totient is φ = 464187800.

The previous prime is 1021213111. The next prime is 1021213247. The reversal of 1021213204 is 4023121201.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11604652 + ... + 11604739.

It is an arithmetic number, because the mean of its divisors is an integer number (162465744).

Almost surely, 2^1021213204 is an apocalyptic number.

It is an amenable number.

1021213204 is a deficient number, since it is larger than the sum of its proper divisors (928375724).

1021213204 is a wasteful number, since it uses less digits than its factorization.

1021213204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23209406 (or 23209404 counting only the distinct ones).

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

The square root of 1021213204 is about 31956.4266462945. The cubic root of 1021213204 is about 1007.0216490472.

Adding to 1021213204 its reverse (4023121201), we get a palindrome (5044334405).

The spelling of 1021213204 in words is "one billion, twenty-one million, two hundred thirteen thousand, two hundred four".