2102221000212 has 144 divisors (see below), whose sum is σ = 5509983736320. Its totient is φ = 622677196800.

The previous prime is 2102221000183. The next prime is 2102221000247. The reversal of 2102221000212 is 2120001222012.

It is a junction number, because it is equal to n+sod(n) for n = 2102221000191 and 2102221000200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4169364 + ... + 4646292.

Almost surely, 2^{2102221000212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102221000212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2754991868160).

2102221000212 is an abundant number, since it is smaller than the sum of its proper divisors (3407762736108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2102221000212 is a wasteful number, since it uses less digits than its factorization.

2102221000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477042 (or 477023 counting only the distinct ones).

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

Adding to 2102221000212 its reverse (2120001222012), we get a palindrome (4222222222224).

The spelling of 2102221000212 in words is "two trillion, one hundred two billion, two hundred twenty-one million, two hundred twelve", and thus it is an aban number.