22211020211200 has 264 divisors, whose sum is σ = 55639496109960. Its totient is φ = 8790441984000.

The previous prime is 22211020211167. The next prime is 22211020211213. The reversal of 22211020211200 is 211202011222.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 400476340224 + 21810543870976 = 632832^2 + 4670176^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7521508924 + ... + 7521511876.

Almost surely, 2^{22211020211200} is an apocalyptic number.

22211020211200 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 22211020211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27819748054980).

22211020211200 is an abundant number, since it is smaller than the sum of its proper divisors (33428475898760).

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

22211020211200 is a wasteful number, since it uses less digits than its factorization.

22211020211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993 (or 5970 counting only the distinct ones).

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

Adding to 22211020211200 its reverse (211202011222), we get a palindrome (22422222222422).

The spelling of 22211020211200 in words is "twenty-two trillion, two hundred eleven billion, twenty million, two hundred eleven thousand, two hundred".