2110002020021 has 32 divisors (see below), whose sum is σ = 2526806433792. Its totient is φ = 1723812425280.

The previous prime is 2110002019981. The next prime is 2110002020099. The reversal of 2110002020021 is 1200202000112.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2110002020021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110002019984 and 2110002020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110002020921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133561895 + ... + 133577691.

It is an arithmetic number, because the mean of its divisors is an integer number (78962701056).

Almost surely, 2^{2110002020021} is an apocalyptic number.

It is an amenable number.

2110002020021 is a deficient number, since it is larger than the sum of its proper divisors (416804413771).

2110002020021 is a wasteful number, since it uses less digits than its factorization.

2110002020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25089.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2110002020021 its reverse (1200202000112), we get a palindrome (3310204020133).

The spelling of 2110002020021 in words is "two trillion, one hundred ten billion, two million, twenty thousand, twenty-one".