21221010011203 has 2 divisors, whose sum is σ = 21221010011204. Its totient is φ = 21221010011202.

The previous prime is 21221010011167. The next prime is 21221010011207. The reversal of 21221010011203 is 30211001012212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21221010011203 is a prime.

It is a super-3 number, since 3×21221010011203³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (21221010011207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610505005601 + 10610505005602.

It is an arithmetic number, because the mean of its divisors is an integer number (10610505005602).

Almost surely, 2^{21221010011203} is an apocalyptic number.

21221010011203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21221010011203 is an equidigital number, since it uses as much as digits as its factorization.

21221010011203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21221010011203 its reverse (30211001012212), we get a palindrome (51432011023415).

The spelling of 21221010011203 in words is "twenty-one trillion, two hundred twenty-one billion, ten million, eleven thousand, two hundred three".