20010131200 has 216 divisors, whose sum is σ = 52820230400. Its totient is φ = 7483207680.

The previous prime is 20010131189. The next prime is 20010131201. The reversal of 20010131200 is 213101002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010131201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9605359 + ... + 9607441.

Almost surely, 2^20010131200 is an apocalyptic number.

20010131200 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 20010131200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26410115200).

20010131200 is an abundant number, since it is smaller than the sum of its proper divisors (32810099200).

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

20010131200 is a wasteful number, since it uses less digits than its factorization.

20010131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207 (or 2188 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20010131200 its reverse (213101002), we get a palindrome (20223232202).

The spelling of 20010131200 in words is "twenty billion, ten million, one hundred thirty-one thousand, two hundred".