21320033103203 has 2 divisors, whose sum is σ = 21320033103204. Its totient is φ = 21320033103202.

The previous prime is 21320033103133. The next prime is 21320033103211. The reversal of 21320033103203 is 30230133002312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21320033103203 - 2³⁰ = 21318959361379 is a prime.

It is not a weakly prime, because it can be changed into another prime (21320033103223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10660016551601 + 10660016551602.

It is an arithmetic number, because the mean of its divisors is an integer number (10660016551602).

Almost surely, 2^{21320033103203} is an apocalyptic number.

21320033103203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21320033103203 is an equidigital number, since it uses as much as digits as its factorization.

21320033103203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21320033103203 its reverse (30230133002312), we get a palindrome (51550166105515).

The spelling of 21320033103203 in words is "twenty-one trillion, three hundred twenty billion, thirty-three million, one hundred three thousand, two hundred three".