21222236003 has 2 divisors, whose sum is σ = 21222236004. Its totient is φ = 21222236002.

The previous prime is 21222235987. The next prime is 21222236027. The reversal of 21222236003 is 30063222212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21222236003 - 2⁴ = 21222235987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21222236003.

It is not a weakly prime, because it can be changed into another prime (21222236303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611118001 + 10611118002.

It is an arithmetic number, because the mean of its divisors is an integer number (10611118002).

Almost surely, 2^21222236003 is an apocalyptic number.

21222236003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222236003 is an equidigital number, since it uses as much as digits as its factorization.

21222236003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21222236003 its reverse (30063222212), we get a palindrome (51285458215).

The spelling of 21222236003 in words is "twenty-one billion, two hundred twenty-two million, two hundred thirty-six thousand, three".