1021224213 has 16 divisors (see below), whose sum is σ = 1513720000. Its totient is φ = 680458320.

The previous prime is 1021224203. The next prime is 1021224223. The reversal of 1021224213 is 3124221201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1021224203) and next prime (1021224223).

It is not a de Polignac number, because 1021224213 - 2⁹ = 1021223701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021224203) 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 15 ways as a sum of consecutive naturals, for example, 48663 + ... + 66411.

It is an arithmetic number, because the mean of its divisors is an integer number (94607500).

Almost surely, 2^1021224213 is an apocalyptic number.

It is an amenable number.

1021224213 is a deficient number, since it is larger than the sum of its proper divisors (492495787).

1021224213 is a wasteful number, since it uses less digits than its factorization.

1021224213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19889 (or 19883 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1021224213 is about 31956.5988960027. The cubic root of 1021224213 is about 1007.0252677044.

Adding to 1021224213 its reverse (3124221201), we get a palindrome (4145445414).

The spelling of 1021224213 in words is "one billion, twenty-one million, two hundred twenty-four thousand, two hundred thirteen".