202221100212 has 96 divisors (see below), whose sum is σ = 511550911872. Its totient is φ = 61926875136.

The previous prime is 202221100141. The next prime is 202221100271. The reversal of 202221100212 is 212001122202.

It is a junction number, because it is equal to n+sod(n) for n = 202221100191 and 202221100200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15581358 + ... + 15594330.

It is an arithmetic number, because the mean of its divisors is an integer number (5328655332).

Almost surely, 2^202221100212 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 202221100212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255775455936).

202221100212 is an abundant number, since it is smaller than the sum of its proper divisors (309329811660).

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

202221100212 is a wasteful number, since it uses less digits than its factorization.

202221100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14817 (or 14815 counting only the distinct ones).

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

Adding to 202221100212 its reverse (212001122202), we get a palindrome (414222222414).

The spelling of 202221100212 in words is "two hundred two billion, two hundred twenty-one million, one hundred thousand, two hundred twelve".