102100200221 has 2 divisors, whose sum is σ = 102100200222. Its totient is φ = 102100200220.

The previous prime is 102100200127. The next prime is 102100200239. The reversal of 102100200221 is 122002001201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97762528900 + 4337671321 = 312670^2 + 65861^2 .

It is a cyclic number.

It is not a de Polignac number, because 102100200221 - 2¹⁸ = 102099938077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102100200121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050100110 + 51050100111.

It is an arithmetic number, because the mean of its divisors is an integer number (51050100111).

Almost surely, 2^102100200221 is an apocalyptic number.

It is an amenable number.

102100200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100200221 is an equidigital number, since it uses as much as digits as its factorization.

102100200221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102100200221 its reverse (122002001201), we get a palindrome (224102201422).

The spelling of 102100200221 in words is "one hundred two billion, one hundred million, two hundred thousand, two hundred twenty-one".