22221200001 has 96 divisors (see below), whose sum is σ = 41167538944. Its totient is φ = 10366963200.

The previous prime is 22221199991. The next prime is 22221200003. The reversal of 22221200001 is 10000212222.

It is not a de Polignac number, because 22221200001 - 2⁵ = 22221199969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22221200001.

It is not an unprimeable number, because it can be changed into a prime (22221200003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1213131 + ... + 1231311.

Almost surely, 2^22221200001 is an apocalyptic number.

22221200001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22221200001 is a deficient number, since it is larger than the sum of its proper divisors (18946338943).

22221200001 is a wasteful number, since it uses less digits than its factorization.

22221200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18263 (or 18252 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22221200001 its reverse (10000212222), we get a palindrome (32221412223).

It can be divided in two parts, 22221 and 200001, that added together give a palindrome (222222).

The spelling of 22221200001 in words is "twenty-two billion, two hundred twenty-one million, two hundred thousand, one".