201100423020 has 192 divisors, whose sum is σ = 664624300032. Its totient is φ = 44460000000.

The previous prime is 201100422983. The next prime is 201100423021. The reversal of 201100423020 is 20324001102.

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

It is not an unprimeable number, because it can be changed into a prime (201100423021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42325645 + ... + 42330395.

It is an arithmetic number, because the mean of its divisors is an integer number (3461584896).

Almost surely, 2^201100423020 is an apocalyptic number.

201100423020 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 201100423020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332312150016).

201100423020 is an abundant number, since it is smaller than the sum of its proper divisors (463523877012).

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

201100423020 is a wasteful number, since it uses less digits than its factorization.

201100423020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052 (or 8050 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 201100423020 its reverse (20324001102), we get a palindrome (221424424122).

The spelling of 201100423020 in words is "two hundred one billion, one hundred million, four hundred twenty-three thousand, twenty".