20001000221203 has 2 divisors, whose sum is σ = 20001000221204. Its totient is φ = 20001000221202.

The previous prime is 20001000221057. The next prime is 20001000221207. The reversal of 20001000221203 is 30212200010002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001000221203 - 2²⁵ = 20000966666771 is a prime.

It is not a weakly prime, because it can be changed into another prime (20001000221207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000500110601 + 10000500110602.

It is an arithmetic number, because the mean of its divisors is an integer number (10000500110602).

Almost surely, 2^{20001000221203} is an apocalyptic number.

20001000221203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001000221203 is an equidigital number, since it uses as much as digits as its factorization.

20001000221203 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 13.

Adding to 20001000221203 its reverse (30212200010002), we get a palindrome (50213200231205).

The spelling of 20001000221203 in words is "twenty trillion, one billion, two hundred twenty-one thousand, two hundred three".