2110110101021 has 8 divisors (see below), whose sum is σ = 2292536231160. Its totient is φ = 1930556823552.

The previous prime is 2110110100999. The next prime is 2110110101023. The reversal of 2110110101021 is 1201010110112.

It can be written as a sum of positive squares in 4 ways, for example, as 20567575396 + 2089542525625 = 143414^2 + 1445525^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2110110101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110110100993 and 2110110101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110110101023) 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, 718211636 + ... + 718214573.

It is an arithmetic number, because the mean of its divisors is an integer number (286567028895).

Almost surely, 2^{2110110101021} is an apocalyptic number.

It is an amenable number.

2110110101021 is a deficient number, since it is larger than the sum of its proper divisors (182426130139).

2110110101021 is a wasteful number, since it uses less digits than its factorization.

2110110101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436426335.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2110110101021 its reverse (1201010110112), we get a palindrome (3311120211133).

Subtracting from 2110110101021 its reverse (1201010110112), we obtain a palindrome (909099990909).

The spelling of 2110110101021 in words is "two trillion, one hundred ten billion, one hundred ten million, one hundred one thousand, twenty-one".