21122323003 has 2 divisors, whose sum is σ = 21122323004. Its totient is φ = 21122323002.

The previous prime is 21122322989. The next prime is 21122323007. The reversal of 21122323003 is 30032322112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21122323003 - 2²¹ = 21120225851 is a prime.

It is a super-3 number, since 3×21122323003³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (21122323007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561161501 + 10561161502.

It is an arithmetic number, because the mean of its divisors is an integer number (10561161502).

Almost surely, 2^21122323003 is an apocalyptic number.

21122323003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122323003 is an equidigital number, since it uses as much as digits as its factorization.

21122323003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21122323003 its reverse (30032322112), we get a palindrome (51154645115).

The spelling of 21122323003 in words is "twenty-one billion, one hundred twenty-two million, three hundred twenty-three thousand, three".