20221120201220 has 24 divisors (see below), whose sum is σ = 42465580708824. Its totient is φ = 8088214121216.

The previous prime is 20221120201211. The next prime is 20221120201237. The reversal of 20221120201220 is 2210202112202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2745509813764 + 17475610387456 = 1656958^2 + 4180384^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13912889 + ... + 15297408.

It is an arithmetic number, because the mean of its divisors is an integer number (1769399196201).

Almost surely, 2^{20221120201220} is an apocalyptic number.

20221120201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221120201220 is an abundant number, since it is smaller than the sum of its proper divisors (22244460507604).

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

20221120201220 is a wasteful number, since it uses less digits than its factorization.

20221120201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29244919 (or 29244917 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20221120201220 its reverse (2210202112202), we get a palindrome (22431322313422).

The spelling of 20221120201220 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty million, two hundred one thousand, two hundred twenty".