2001223351 has 2 divisors, whose sum is σ = 2001223352. Its totient is φ = 2001223350.

The previous prime is 2001223297. The next prime is 2001223361. The reversal of 2001223351 is 1533221002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001223351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001223361) 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 as a sum of consecutive naturals, namely, 1000611675 + 1000611676.

It is an arithmetic number, because the mean of its divisors is an integer number (1000611676).

Almost surely, 2^2001223351 is an apocalyptic number.

2001223351 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001223351 is an equidigital number, since it uses as much as digits as its factorization.

2001223351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2001223351 is about 44735.0349390721. The cubic root of 2001223351 is about 1260.1778851481.

Adding to 2001223351 its reverse (1533221002), we get a palindrome (3534444353).

The spelling of 2001223351 in words is "two billion, one million, two hundred twenty-three thousand, three hundred fifty-one".