2100020110221 has 32 divisors (see below), whose sum is σ = 3091269847680. Its totient is φ = 1268007438720.

The previous prime is 2100020110207. The next prime is 2100020110229. The reversal of 2100020110221 is 1220110200012.

It is not a de Polignac number, because 2100020110221 - 2⁷ = 2100020110093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100020110197 and 2100020110206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100020110229) 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, 96561 + ... + 2051673.

It is an arithmetic number, because the mean of its divisors is an integer number (96602182740).

Almost surely, 2^{2100020110221} is an apocalyptic number.

It is an amenable number.

2100020110221 is a deficient number, since it is larger than the sum of its proper divisors (991249737459).

2100020110221 is a wasteful number, since it uses less digits than its factorization.

2100020110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955418 (or 1955396 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2100020110221 its reverse (1220110200012), we get a palindrome (3320130310233).

The spelling of 2100020110221 in words is "two trillion, one hundred billion, twenty million, one hundred ten thousand, two hundred twenty-one".