21212202220003 has 2 divisors, whose sum is σ = 21212202220004. Its totient is φ = 21212202220002.

The previous prime is 21212202219977. The next prime is 21212202220063. The reversal of 21212202220003 is 30002220221212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21212202220003 is a prime.

It is a super-2 number, since 2×21212202220003² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21212202220063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606101110001 + 10606101110002.

It is an arithmetic number, because the mean of its divisors is an integer number (10606101110002).

Almost surely, 2^{21212202220003} is an apocalyptic number.

21212202220003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21212202220003 is an equidigital number, since it uses as much as digits as its factorization.

21212202220003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21212202220003 its reverse (30002220221212), we get a palindrome (51214422441215).

The spelling of 21212202220003 in words is "twenty-one trillion, two hundred twelve billion, two hundred two million, two hundred twenty thousand, three".