1001211223 has 2 divisors, whose sum is σ = 1001211224. Its totient is φ = 1001211222.

The previous prime is 1001211221. The next prime is 1001211227. The reversal of 1001211223 is 3221121001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001211223 - 2¹ = 1001211221 is a prime.

It is a super-2 number, since 2×1001211223² = 2004847826122311458, which contains 22 as substring.

Together with 1001211221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001211221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500605611 + 500605612.

It is an arithmetic number, because the mean of its divisors is an integer number (500605612).

Almost surely, 2^1001211223 is an apocalyptic number.

1001211223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001211223 is an equidigital number, since it uses as much as digits as its factorization.

1001211223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1001211223 is about 31641.9219232966. The cubic root of 1001211223 is about 1000.4035781028.

Adding to 1001211223 its reverse (3221121001), we get a palindrome (4222332224).

The spelling of 1001211223 in words is "one billion, one million, two hundred eleven thousand, two hundred twenty-three".