21100320130033 has 2 divisors, whose sum is σ = 21100320130034. Its totient is φ = 21100320130032.

The previous prime is 21100320129991. The next prime is 21100320130051. The reversal of 21100320130033 is 33003102300112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20841124083264 + 259196046769 = 4565208^2 + 509113^2 .

It is a cyclic number.

It is not a de Polignac number, because 21100320130033 - 2²⁵ = 21100286575601 is a prime.

It is not a weakly prime, because it can be changed into another prime (21100320130093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550160065016 + 10550160065017.

It is an arithmetic number, because the mean of its divisors is an integer number (10550160065017).

Almost surely, 2^{21100320130033} is an apocalyptic number.

It is an amenable number.

21100320130033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100320130033 is an equidigital number, since it uses as much as digits as its factorization.

21100320130033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21100320130033 its reverse (33003102300112), we get a palindrome (54103422430145).

The spelling of 21100320130033 in words is "twenty-one trillion, one hundred billion, three hundred twenty million, one hundred thirty thousand, thirty-three".