22201102100 has 72 divisors (see below), whose sum is σ = 49510581120. Its totient is φ = 8636302080.

The previous prime is 22201102097. The next prime is 22201102103. The reversal of 22201102100 is 120110222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22201102097) and next prime (22201102103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201102103) 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, 990821 + ... + 1012979.

It is an arithmetic number, because the mean of its divisors is an integer number (687646960).

Almost surely, 2^22201102100 is an apocalyptic number.

22201102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22201102100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24755290560).

22201102100 is an abundant number, since it is smaller than the sum of its proper divisors (27309479020).

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

22201102100 is a wasteful number, since it uses less digits than its factorization.

22201102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22449 (or 22442 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22201102100 its reverse (120110222), we get a palindrome (22321212322).

The spelling of 22201102100 in words is "twenty-two billion, two hundred one million, one hundred two thousand, one hundred".