20110131210 has 256 divisors, whose sum is σ = 55589732352. Its totient is φ = 4620672000.

The previous prime is 20110131199. The next prime is 20110131247. The reversal of 20110131210 is 1213101102.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 52506679 + ... + 52507061.

It is an arithmetic number, because the mean of its divisors is an integer number (217147392).

Almost surely, 2^20110131210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20110131210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27794866176).

20110131210 is an abundant number, since it is smaller than the sum of its proper divisors (35479601142).

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

20110131210 is a wasteful number, since it uses less digits than its factorization.

20110131210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581.

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

Adding to 20110131210 its reverse (1213101102), we get a palindrome (21323232312).

The spelling of 20110131210 in words is "twenty billion, one hundred ten million, one hundred thirty-one thousand, two hundred ten".