21100010113 has 16 divisors (see below), whose sum is σ = 26602644096. Its totient is φ = 16287327360.

The previous prime is 21100010083. The next prime is 21100010117. The reversal of 21100010113 is 31101000112.

It is a cyclic number.

It is not a de Polignac number, because 21100010113 - 2⁵ = 21100010081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21100010113.

It is not an unprimeable number, because it can be changed into a prime (21100010117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2823931 + ... + 2831392.

It is an arithmetic number, because the mean of its divisors is an integer number (1662665256).

Almost surely, 2^21100010113 is an apocalyptic number.

It is an amenable number.

21100010113 is a deficient number, since it is larger than the sum of its proper divisors (5502633983).

21100010113 is a wasteful number, since it uses less digits than its factorization.

21100010113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5655384.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 21100010113 its reverse (31101000112), we get a palindrome (52201010225).

The spelling of 21100010113 in words is "twenty-one billion, one hundred million, ten thousand, one hundred thirteen".