21330223031203 has 2 divisors, whose sum is σ = 21330223031204. Its totient is φ = 21330223031202.

The previous prime is 21330223031191. The next prime is 21330223031207. The reversal of 21330223031203 is 30213032203312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21330223031203 is a prime.

It is not a weakly prime, because it can be changed into another prime (21330223031207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665111515601 + 10665111515602.

It is an arithmetic number, because the mean of its divisors is an integer number (10665111515602).

Almost surely, 2^{21330223031203} is an apocalyptic number.

21330223031203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330223031203 is an equidigital number, since it uses as much as digits as its factorization.

21330223031203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21330223031203 its reverse (30213032203312), we get a palindrome (51543255234515).

The spelling of 21330223031203 in words is "twenty-one trillion, three hundred thirty billion, two hundred twenty-three million, thirty-one thousand, two hundred three".