20210022221200 has 120 divisors (see below), whose sum is σ = 55511619028992. Its totient is φ = 6926569128960.

The previous prime is 20210022221171. The next prime is 20210022221227. The reversal of 20210022221200 is 212222001202.

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, 6180492 + ... + 8866708.

Almost surely, 2^{20210022221200} is an apocalyptic number.

20210022221200 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 20210022221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27755809514496).

20210022221200 is an abundant number, since it is smaller than the sum of its proper divisors (35301596807792).

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

20210022221200 is a wasteful number, since it uses less digits than its factorization.

20210022221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688929 (or 2688918 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20210022221200 its reverse (212222001202), we get a palindrome (20422244222402).

The spelling of 20210022221200 in words is "twenty trillion, two hundred ten billion, twenty-two million, two hundred twenty-one thousand, two hundred".