20201322100 has 18 divisors (see below), whose sum is σ = 43836869174. Its totient is φ = 8080528800.

The previous prime is 20201322091. The next prime is 20201322103. The reversal of 20201322100 is 122310202.

It can be written as a sum of positive squares in 3 ways, for example, as 1606727056 + 18594595044 = 40084^2 + 136362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201322103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101006511 + ... + 101006710.

Almost surely, 2^20201322100 is an apocalyptic number.

20201322100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201322100 is an abundant number, since it is smaller than the sum of its proper divisors (23635547074).

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

20201322100 is a wasteful number, since it uses less digits than its factorization.

20201322100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202013235 (or 202013228 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20201322100 its reverse (122310202), we get a palindrome (20323632302).

The spelling of 20201322100 in words is "twenty billion, two hundred one million, three hundred twenty-two thousand, one hundred".