10231212222 has 192 divisors, whose sum is σ = 29909827584. Its totient is φ = 2541702240.

The previous prime is 10231212203. The next prime is 10231212241. The reversal of 10231212222 is 22221213201.

10231212222 is a `hidden beast` number, since 1 + 0 + 231 + 212 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (10231212203) and next prime (10231212241).

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 = 10231212195 and 10231212204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 854763 + ... + 866649.

It is an arithmetic number, because the mean of its divisors is an integer number (155780352).

Almost surely, 2^10231212222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10231212222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14954913792).

10231212222 is an abundant number, since it is smaller than the sum of its proper divisors (19678615362).

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

10231212222 is a wasteful number, since it uses less digits than its factorization.

10231212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11945 (or 11933 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10231212222 its reverse (22221213201), we get a palindrome (32452425423).

The spelling of 10231212222 in words is "ten billion, two hundred thirty-one million, two hundred twelve thousand, two hundred twenty-two".