21000201122203 has 2 divisors, whose sum is σ = 21000201122204. Its totient is φ = 21000201122202.

The previous prime is 21000201122177. The next prime is 21000201122357. The reversal of 21000201122203 is 30222110200012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21000201122203 is a prime.

It is a super-2 number, since 2×21000201122203² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21000201122503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500100561101 + 10500100561102.

It is an arithmetic number, because the mean of its divisors is an integer number (10500100561102).

Almost surely, 2^{21000201122203} is an apocalyptic number.

21000201122203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000201122203 is an equidigital number, since it uses as much as digits as its factorization.

21000201122203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21000201122203 its reverse (30222110200012), we get a palindrome (51222311322215).

It can be divided in two parts, 2100020 and 1122203, that added together give a palindrome (3222223).

The spelling of 21000201122203 in words is "twenty-one trillion, two hundred one million, one hundred twenty-two thousand, two hundred three".