21022100012203 has 2 divisors, whose sum is σ = 21022100012204. Its totient is φ = 21022100012202.

The previous prime is 21022100012131. The next prime is 21022100012233. The reversal of 21022100012203 is 30221000122012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022100012203 is a prime.

It is not a weakly prime, because it can be changed into another prime (21022100012233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511050006101 + 10511050006102.

It is an arithmetic number, because the mean of its divisors is an integer number (10511050006102).

Almost surely, 2^{21022100012203} is an apocalyptic number.

21022100012203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022100012203 is an equidigital number, since it uses as much as digits as its factorization.

21022100012203 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 21022100012203 its reverse (30221000122012), we get a palindrome (51243100134215).

The spelling of 21022100012203 in words is "twenty-one trillion, twenty-two billion, one hundred million, twelve thousand, two hundred three".