22222201100 has 72 divisors (see below), whose sum is σ = 55700528688. Its totient is φ = 7605452800.

The previous prime is 22222201087. The next prime is 22222201103. The reversal of 22222201100 is 110222222.

It is not an unprimeable number, because it can be changed into a prime (22222201103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 575477 + ... + 612876.

It is an arithmetic number, because the mean of its divisors is an integer number (773618454).

Almost surely, 2^22222201100 is an apocalyptic number.

22222201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222201100 is an abundant number, since it is smaller than the sum of its proper divisors (33478327588).

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

22222201100 is a wasteful number, since it uses less digits than its factorization.

22222201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188395 (or 1188388 counting only the distinct ones).

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

Adding to 22222201100 its reverse (110222222), we get a palindrome (22332423322).

It can be divided in two parts, 22222 and 201100, that added together give a palindrome (223322).

The spelling of 22222201100 in words is "twenty-two billion, two hundred twenty-two million, two hundred one thousand, one hundred".