2110021112021 has 4 divisors (see below), whose sum is σ = 2110024352844. Its totient is φ = 2110017871200.

The previous prime is 2110021111987. The next prime is 2110021112081. The reversal of 2110021112021 is 1202111200112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 884098270225 + 1225922841796 = 940265^2 + 1107214^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110021112021 - 2¹⁰ = 2110021110997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110021111987 and 2110021112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110021112081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266990 + ... + 2071551.

It is an arithmetic number, because the mean of its divisors is an integer number (527506088211).

Almost surely, 2^{2110021112021} is an apocalyptic number.

It is an amenable number.

2110021112021 is a deficient number, since it is larger than the sum of its proper divisors (3240823).

2110021112021 is an equidigital number, since it uses as much as digits as its factorization.

2110021112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240822.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2110021112021 its reverse (1202111200112), we get a palindrome (3312132312133).

The spelling of 2110021112021 in words is "two trillion, one hundred ten billion, twenty-one million, one hundred twelve thousand, twenty-one".