100023123222 has 144 divisors (see below), whose sum is σ = 246731232384. Its totient is φ = 29232403200.

The previous prime is 100023123197. The next prime is 100023123223. The reversal of 100023123222 is 222321320001.

It is a super-2 number, since 2×100023123222² (a number of 23 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 = 100023123195 and 100023123204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100023123223) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21130768 + ... + 21135500.

It is an arithmetic number, because the mean of its divisors is an integer number (1713411336).

Almost surely, 2^100023123222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100023123222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123365616192).

100023123222 is an abundant number, since it is smaller than the sum of its proper divisors (146708109162).

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

100023123222 is a wasteful number, since it uses less digits than its factorization.

100023123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5107 (or 5093 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 100023123222 its reverse (222321320001), we get a palindrome (322344443223).

The spelling of 100023123222 in words is "one hundred billion, twenty-three million, one hundred twenty-three thousand, two hundred twenty-two".