20221231320100 has 36 divisors (see below), whose sum is σ = 46461252672324. Its totient is φ = 7612698849280.

The previous prime is 20221231320091. The next prime is 20221231320107. The reversal of 20221231320100 is 102313212202.

It can be written as a sum of positive squares in 6 ways, for example, as 403634043684 + 19817597276416 = 635322^2 + 4451696^2 .

It is a super-2 number, since 2×20221231320100² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20221231320107) 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, 5947419277 + ... + 5947422676.

It is an arithmetic number, because the mean of its divisors is an integer number (1290590352009).

Almost surely, 2^{20221231320100} is an apocalyptic number.

20221231320100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221231320100 is an abundant number, since it is smaller than the sum of its proper divisors (26240021352224).

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

20221231320100 is a wasteful number, since it uses less digits than its factorization.

20221231320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11894841984 (or 11894841977 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20221231320100 its reverse (102313212202), we get a palindrome (20323544532302).

The spelling of 20221231320100 in words is "twenty trillion, two hundred twenty-one billion, two hundred thirty-one million, three hundred twenty thousand, one hundred".