20220021211200 has 168 divisors, whose sum is σ = 66342901014720. Its totient is φ = 5391649536000.

The previous prime is 20220021211177. The next prime is 20220021211211. The reversal of 20220021211200 is 211212002202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20220021211200.

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, 77000125 + ... + 77262275.

Almost surely, 2^{20220021211200} is an apocalyptic number.

20220021211200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220021211200 is an abundant number, since it is smaller than the sum of its proper divisors (46122879803520).

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

20220021211200 is a wasteful number, since it uses less digits than its factorization.

20220021211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278245 (or 278230 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20220021211200 its reverse (211212002202), we get a palindrome (20431233213402).

The spelling of 20220021211200 in words is "twenty trillion, two hundred twenty billion, twenty-one million, two hundred eleven thousand, two hundred".