102001000021201 has 2 divisors, whose sum is σ = 102001000021202. Its totient is φ = 102001000021200.

The previous prime is 102001000021187. The next prime is 102001000021223. The reversal of 102001000021201 is 102120000100201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101795972181201 + 205027840000 = 10089399^2 + 452800^2 .

It is a cyclic number.

It is not a de Polignac number, because 102001000021201 - 2¹³ = 102001000013009 is a prime.

It is not a weakly prime, because it can be changed into another prime (102001000021001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51000500010600 + 51000500010601.

It is an arithmetic number, because the mean of its divisors is an integer number (51000500010601).

Almost surely, 2^{102001000021201} is an apocalyptic number.

It is an amenable number.

102001000021201 is a deficient number, since it is larger than the sum of its proper divisors (1).

102001000021201 is an equidigital number, since it uses as much as digits as its factorization.

102001000021201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102001000021201 its reverse (102120000100201), we get a palindrome (204121000121402).

The spelling of 102001000021201 in words is "one hundred two trillion, one billion, twenty-one thousand, two hundred one".