22220201211100 has 72 divisors (see below), whose sum is σ = 49405479909408. Its totient is φ = 8669261875200.

The previous prime is 22220201211077. The next prime is 22220201211107. The reversal of 22220201211100 is 111210202222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220201211107) 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, 16885137 + ... + 18153463.

It is an arithmetic number, because the mean of its divisors is an integer number (686187220964).

Almost surely, 2^{22220201211100} is an apocalyptic number.

22220201211100 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 22220201211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24702739954704).

22220201211100 is an abundant number, since it is smaller than the sum of its proper divisors (27185278698308).

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

22220201211100 is a wasteful number, since it uses less digits than its factorization.

22220201211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272655 (or 1272648 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22220201211100 its reverse (111210202222), we get a palindrome (22331411413322).

The spelling of 22220201211100 in words is "twenty-two trillion, two hundred twenty billion, two hundred one million, two hundred eleven thousand, one hundred".