123021210222 has 96 divisors (see below), whose sum is σ = 289592035200. Its totient is φ = 37619930304.

The previous prime is 123021210167. The next prime is 123021210287. The reversal of 123021210222 is 222012120321.

123021210222 is a `hidden beast` number, since 1 + 230 + 2 + 1 + 210 + 222 = 666.

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 = 123021210195 and 123021210204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1306428 + ... + 1397424.

It is an arithmetic number, because the mean of its divisors is an integer number (3016583700).

Almost surely, 2^123021210222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123021210222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144796017600).

123021210222 is an abundant number, since it is smaller than the sum of its proper divisors (166570824978).

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

123021210222 is a wasteful number, since it uses less digits than its factorization.

123021210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91150 (or 91147 counting only the distinct ones).

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

Adding to 123021210222 its reverse (222012120321), we get a palindrome (345033330543).

The spelling of 123021210222 in words is "one hundred twenty-three billion, twenty-one million, two hundred ten thousand, two hundred twenty-two".