2102110222021 has 8 divisors (see below), whose sum is σ = 2122668085824. Its totient is φ = 2081555224320.

The previous prime is 2102110221997. The next prime is 2102110222027. The reversal of 2102110222021 is 1202220112012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2102110222021 - 2⁵ = 2102110221989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102110221986 and 2102110222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102110222027) 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 7 ways as a sum of consecutive naturals, for example, 772581 + ... + 2191141.

It is an arithmetic number, because the mean of its divisors is an integer number (265333510728).

Almost surely, 2^{2102110222021} is an apocalyptic number.

It is an amenable number.

2102110222021 is a deficient number, since it is larger than the sum of its proper divisors (20557863803).

2102110222021 is a wasteful number, since it uses less digits than its factorization.

2102110222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433051.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2102110222021 its reverse (1202220112012), we get a palindrome (3304330334033).

The spelling of 2102110222021 in words is "two trillion, one hundred two billion, one hundred ten million, two hundred twenty-two thousand, twenty-one".