10123212222 has 32 divisors (see below), whose sum is σ = 22504627200. Its totient is φ = 3373114104.

The previous prime is 10123212191. The next prime is 10123212227. The reversal of 10123212222 is 22221232101.

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 = 10123212195 and 10123212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123212227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112353 + ... + 181299.

It is an arithmetic number, because the mean of its divisors is an integer number (703269600).

Almost surely, 2^10123212222 is an apocalyptic number.

10123212222 is an abundant number, since it is smaller than the sum of its proper divisors (12381414978).

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

10123212222 is a wasteful number, since it uses less digits than its factorization.

10123212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71677 (or 71671 counting only the distinct ones).

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

Adding to 10123212222 its reverse (22221232101), we get a palindrome (32344444323).

The spelling of 10123212222 in words is "ten billion, one hundred twenty-three million, two hundred twelve thousand, two hundred twenty-two".