2102000212221 has 32 divisors (see below), whose sum is σ = 3468493986048. Its totient is φ = 1102621662720.

The previous prime is 2102000212211. The next prime is 2102000212241. The reversal of 2102000212221 is 1222120002012.

It is not a de Polignac number, because 2102000212221 - 2¹⁵ = 2102000179453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102000212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102000212201) 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, 21220296 + ... + 21319121.

It is an arithmetic number, because the mean of its divisors is an integer number (108390437064).

Almost surely, 2^{2102000212221} is an apocalyptic number.

2102000212221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2102000212221 is a deficient number, since it is larger than the sum of its proper divisors (1366493773827).

2102000212221 is a wasteful number, since it uses less digits than its factorization.

2102000212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42539621.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2102000212221 its reverse (1222120002012), we get a palindrome (3324120214233).

The spelling of 2102000212221 in words is "two trillion, one hundred two billion, two hundred twelve thousand, two hundred twenty-one".