10213131222 has 48 divisors (see below), whose sum is σ = 25295486112. Its totient is φ = 2917365120.

The previous prime is 10213131193. The next prime is 10213131223. The reversal of 10213131222 is 22213131201.

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 = 10213131195 and 10213131204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10213131223) 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, 858072 + ... + 869892.

It is an arithmetic number, because the mean of its divisors is an integer number (526989294).

Almost surely, 2^10213131222 is an apocalyptic number.

10213131222 is an abundant number, since it is smaller than the sum of its proper divisors (15082354890).

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

10213131222 is a wasteful number, since it uses less digits than its factorization.

10213131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18693 (or 18690 counting only the distinct ones).

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

Adding to 10213131222 its reverse (22213131201), we get a palindrome (32426262423).

The spelling of 10213131222 in words is "ten billion, two hundred thirteen million, one hundred thirty-one thousand, two hundred twenty-two".