23331221003 has 2 divisors, whose sum is σ = 23331221004. Its totient is φ = 23331221002.

The previous prime is 23331220987. The next prime is 23331221009. The reversal of 23331221003 is 30012213332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23331221003 - 2⁴ = 23331220987 is a prime.

It is not a weakly prime, because it can be changed into another prime (23331221009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11665610501 + 11665610502.

It is an arithmetic number, because the mean of its divisors is an integer number (11665610502).

Almost surely, 2^23331221003 is an apocalyptic number.

23331221003 is a deficient number, since it is larger than the sum of its proper divisors (1).

23331221003 is an equidigital number, since it uses as much as digits as its factorization.

23331221003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23331221003 its reverse (30012213332), we get a palindrome (53343434335).

The spelling of 23331221003 in words is "twenty-three billion, three hundred thirty-one million, two hundred twenty-one thousand, three".