10131123222 has 64 divisors (see below), whose sum is σ = 24677003520. Its totient is φ = 3055449600.

The previous prime is 10131123161. The next prime is 10131123229. The reversal of 10131123222 is 22232113101.

10131123222 is a `hidden beast` number, since 101 + 311 + 232 + 22 = 666.

It is a super-2 number, since 2×10131123222² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10131123195 and 10131123204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131123229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84918 + ... + 165750.

It is an arithmetic number, because the mean of its divisors is an integer number (385578180).

Almost surely, 2^10131123222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10131123222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12338501760).

10131123222 is an abundant number, since it is smaller than the sum of its proper divisors (14545880298).

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

10131123222 is a wasteful number, since it uses less digits than its factorization.

10131123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81066 (or 81060 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 10131123222 its reverse (22232113101), we get a palindrome (32363236323).

The spelling of 10131123222 in words is "ten billion, one hundred thirty-one million, one hundred twenty-three thousand, two hundred twenty-two".