221222210000 has 100 divisors (see below), whose sum is σ = 584292391584. Its totient is φ = 80444400000.

The previous prime is 221222209993. The next prime is 221222210029. The reversal of 221222210000 is 12222122.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 895556 + ... + 1115555.

Almost surely, 2^221222210000 is an apocalyptic number.

221222210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222210000 is an abundant number, since it is smaller than the sum of its proper divisors (363070181584).

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

221222210000 is a wasteful number, since it uses less digits than its factorization.

221222210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011150 (or 2011129 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221222210000 its reverse (12222122), we get a palindrome (221234432122).

It can be divided in two parts, 2212222 and 10000, that added together give a palindrome (2222222).

The spelling of 221222210000 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred ten thousand".