210102100121101 has 2 divisors, whose sum is σ = 210102100121102. Its totient is φ = 210102100121100.

The previous prime is 210102100121087. The next prime is 210102100121231. The reversal of 210102100121101 is 101121001201012.

It is a happy number.

210102100121101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186466508015076 + 23635592106025 = 13655274^2 + 4861645^2 .

It is a cyclic number.

It is not a de Polignac number, because 210102100121101 - 2⁷ = 210102100120973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210102100191101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105051050060550 + 105051050060551.

It is an arithmetic number, because the mean of its divisors is an integer number (105051050060551).

Almost surely, 2^{210102100121101} is an apocalyptic number.

It is an amenable number.

210102100121101 is a deficient number, since it is larger than the sum of its proper divisors (1).

210102100121101 is an equidigital number, since it uses as much as digits as its factorization.

210102100121101 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 13.

Adding to 210102100121101 its reverse (101121001201012), we get a palindrome (311223101322113).

The spelling of 210102100121101 in words is "two hundred ten trillion, one hundred two billion, one hundred million, one hundred twenty-one thousand, one hundred one".