22201100020 has 96 divisors (see below), whose sum is σ = 53973029376. Its totient is φ = 7581235200.

The previous prime is 22201099951. The next prime is 22201100021. The reversal of 22201100020 is 2000110222.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201100021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1725210 + ... + 1738030.

It is an arithmetic number, because the mean of its divisors is an integer number (562219056).

Almost surely, 2^22201100020 is an apocalyptic number.

22201100020 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 22201100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26986514688).

22201100020 is an abundant number, since it is smaller than the sum of its proper divisors (31771929356).

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

22201100020 is a wasteful number, since it uses less digits than its factorization.

22201100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13321 (or 13319 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22201100020 its reverse (2000110222), we get a palindrome (24201210242).

It can be divided in two parts, 22201 and 100020, that added together give a palindrome (122221).

The spelling of 22201100020 in words is "twenty-two billion, two hundred one million, one hundred thousand, twenty".