1001213223 has 16 divisors (see below), whose sum is σ = 1364967936. Its totient is φ = 652500800.

The previous prime is 1001213221. The next prime is 1001213233. The reversal of 1001213223 is 3223121001.

It is a cyclic number.

It is not a de Polignac number, because 1001213223 - 2¹ = 1001213221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001213221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130648 + ... + 138098.

It is an arithmetic number, because the mean of its divisors is an integer number (85310496).

Almost surely, 2^1001213223 is an apocalyptic number.

1001213223 is a deficient number, since it is larger than the sum of its proper divisors (363754713).

1001213223 is an equidigital number, since it uses as much as digits as its factorization.

1001213223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8454.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1001213223 is about 31641.9535269237. The cubic root of 1001213223 is about 1000.4042442312.

Adding to 1001213223 its reverse (3223121001), we get a palindrome (4224334224).

The spelling of 1001213223 in words is "one billion, one million, two hundred thirteen thousand, two hundred twenty-three".