2110110100021 has 12 divisors (see below), whose sum is σ = 2677764951360. Its totient is φ = 1644241635960.

The previous prime is 2110110099991. The next prime is 2110110100073. The reversal of 2110110100021 is 1200010110112.

It is not a de Polignac number, because 2110110100021 - 2⁷ = 2110110099893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110110099980 and 2110110100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110110160021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1957429981 + ... + 1957431058.

It is an arithmetic number, because the mean of its divisors is an integer number (223147079280).

Almost surely, 2^{2110110100021} is an apocalyptic number.

It is an amenable number.

2110110100021 is a deficient number, since it is larger than the sum of its proper divisors (567654851339).

2110110100021 is a wasteful number, since it uses less digits than its factorization.

2110110100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914861064 (or 3914861057 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2110110100021 its reverse (1200010110112), we get a palindrome (3310120210133).

The spelling of 2110110100021 in words is "two trillion, one hundred ten billion, one hundred ten million, one hundred thousand, twenty-one".