22211200002100 has 36 divisors (see below), whose sum is σ = 48201194963404. Its totient is φ = 8883947105280.

The previous prime is 22211200002067. The next prime is 22211200002107. The reversal of 22211200002100 is 120000211222.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1865813938704 + 20345386063396 = 1365948^2 + 4510586^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211200002107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4983549 + ... + 8322148.

Almost surely, 2^{22211200002100} is an apocalyptic number.

22211200002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211200002100 is an abundant number, since it is smaller than the sum of its proper divisors (25989994961304).

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

22211200002100 is a wasteful number, since it uses less digits than its factorization.

22211200002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13322404 (or 13322397 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22211200002100 its reverse (120000211222), we get a palindrome (22331200213322).

The spelling of 22211200002100 in words is "twenty-two trillion, two hundred eleven billion, two hundred million, two thousand, one hundred".