210100121113 has 2 divisors, whose sum is σ = 210100121114. Its totient is φ = 210100121112.

The previous prime is 210100121111. The next prime is 210100121129. The reversal of 210100121113 is 311121001012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129734674969 + 80365446144 = 360187^2 + 283488^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100121113 - 2¹ = 210100121111 is a prime.

Together with 210100121111, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 210100121093 and 210100121102.

It is not a weakly prime, because it can be changed into another prime (210100121111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050060556 + 105050060557.

It is an arithmetic number, because the mean of its divisors is an integer number (105050060557).

Almost surely, 2^210100121113 is an apocalyptic number.

It is an amenable number.

210100121113 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100121113 is an equidigital number, since it uses as much as digits as its factorization.

210100121113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 210100121113 its reverse (311121001012), we get a palindrome (521221122125).

The spelling of 210100121113 in words is "two hundred ten billion, one hundred million, one hundred twenty-one thousand, one hundred thirteen".