221022221200212 has 48 divisors (see below), whose sum is σ = 533234371948992. Its totient is φ = 71205396069120.

The previous prime is 221022221200189. The next prime is 221022221200373. The reversal of 221022221200212 is 212002122220122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2099163043 + ... + 2099268330.

It is an arithmetic number, because the mean of its divisors is an integer number (11109049415604).

Almost surely, 2^{221022221200212} is an apocalyptic number.

It is an amenable number.

221022221200212 is an abundant number, since it is smaller than the sum of its proper divisors (312212150748780).

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

221022221200212 is a wasteful number, since it uses less digits than its factorization.

221022221200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4198431528 (or 4198431526 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221022221200212 its reverse (212002122220122), we get a palindrome (433024343420334).

The spelling of 221022221200212 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred twenty-one million, two hundred thousand, two hundred twelve".