21010110211113 has 8 divisors (see below), whose sum is σ = 28013507776800. Its totient is φ = 14006726393088.

The previous prime is 21010110211109. The next prime is 21010110211127. The reversal of 21010110211113 is 31111201101012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21010110211113 - 2² = 21010110211109 is a prime.

It is a super-2 number, since 2×21010110211113² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21010110211092 and 21010110211101.

It is not an unprimeable number, because it can be changed into a prime (21010110211163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916978 + ... + 6546836.

It is an arithmetic number, because the mean of its divisors is an integer number (3501688472100).

Almost surely, 2^{21010110211113} is an apocalyptic number.

It is an amenable number.

21010110211113 is a deficient number, since it is larger than the sum of its proper divisors (7003397565687).

21010110211113 is a wasteful number, since it uses less digits than its factorization.

21010110211113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6873831.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 21010110211113 its reverse (31111201101012), we get a palindrome (52121311312125).

The spelling of 21010110211113 in words is "twenty-one trillion, ten billion, one hundred ten million, two hundred eleven thousand, one hundred thirteen".