21203200301329 has 2 divisors, whose sum is σ = 21203200301330. Its totient is φ = 21203200301328.

The previous prime is 21203200301293. The next prime is 21203200301347. The reversal of 21203200301329 is 92310300230212.

Together with previous prime (21203200301293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21050845134400 + 152355166929 = 4588120^2 + 390327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21203200301329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21203200301297 and 21203200301306.

It is not a weakly prime, because it can be changed into another prime (21203200302329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601600150664 + 10601600150665.

It is an arithmetic number, because the mean of its divisors is an integer number (10601600150665).

Almost surely, 2^{21203200301329} is an apocalyptic number.

It is an amenable number.

21203200301329 is a deficient number, since it is larger than the sum of its proper divisors (1).

21203200301329 is an equidigital number, since it uses as much as digits as its factorization.

21203200301329 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 28.

The spelling of 21203200301329 in words is "twenty-one trillion, two hundred three billion, two hundred million, three hundred one thousand, three hundred twenty-nine".