21010103122113 has 36 divisors (see below), whose sum is σ = 35315772195600. Its totient is φ = 12001324302576.

The previous prime is 21010103122079. The next prime is 21010103122139. The reversal of 21010103122113 is 31122130101012.

It is not a de Polignac number, because 21010103122113 - 2¹³ = 21010103113921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21010103122213) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7635595 + ... + 10016112.

It is an arithmetic number, because the mean of its divisors is an integer number (980993672100).

Almost surely, 2^{21010103122113} is an apocalyptic number.

It is an amenable number.

21010103122113 is a deficient number, since it is larger than the sum of its proper divisors (14305669073487).

21010103122113 is a wasteful number, since it uses less digits than its factorization.

21010103122113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17654426 (or 17654416 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21010103122113 its reverse (31122130101012), we get a palindrome (52132233223125).

The spelling of 21010103122113 in words is "twenty-one trillion, ten billion, one hundred three million, one hundred twenty-two thousand, one hundred thirteen".