1021213223 has 8 divisors (see below), whose sum is σ = 1029998592. Its totient is φ = 1012439736.

The previous prime is 1021213111. The next prime is 1021213247. The reversal of 1021213223 is 3223121201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021213223 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 (1021213723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286136 + ... + 289682.

It is an arithmetic number, because the mean of its divisors is an integer number (128749824).

Almost surely, 2^1021213223 is an apocalyptic number.

1021213223 is a deficient number, since it is larger than the sum of its proper divisors (8785369).

1021213223 is a wasteful number, since it uses less digits than its factorization.

1021213223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1021213223 is about 31956.4269435743. The cubic root of 1021213223 is about 1007.0216552926.

Adding to 1021213223 its reverse (3223121201), we get a palindrome (4244334424).

The spelling of 1021213223 in words is "one billion, twenty-one million, two hundred thirteen thousand, two hundred twenty-three".