22201001021100 has 288 divisors, whose sum is σ = 71302828826880. Its totient is φ = 5287818240000.

The previous prime is 22201001021081. The next prime is 22201001021119. The reversal of 22201001021100 is 112010010222.

It is an interprime number because it is at equal distance from previous prime (22201001021081) and next prime (22201001021119).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 350623044 + ... + 350686356.

It is an arithmetic number, because the mean of its divisors is an integer number (247579266760).

Almost surely, 2^{22201001021100} is an apocalyptic number.

22201001021100 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 22201001021100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35651414413440).

22201001021100 is an abundant number, since it is smaller than the sum of its proper divisors (49101827805780).

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

22201001021100 is a wasteful number, since it uses less digits than its factorization.

22201001021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65201 (or 65194 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22201001021100 its reverse (112010010222), we get a palindrome (22313011031322).

The spelling of 22201001021100 in words is "twenty-two trillion, two hundred one billion, one million, twenty-one thousand, one hundred".