123051222 has 48 divisors (see below), whose sum is σ = 308149920. Its totient is φ = 34759296.

The previous prime is 123051197. The next prime is 123051281. The reversal of 123051222 is 222150321.

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 = 123051195 and 123051204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5728 + ... + 16700.

It is an arithmetic number, because the mean of its divisors is an integer number (6419790).

Almost surely, 2^123051222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123051222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154074960).

123051222 is an abundant number, since it is smaller than the sum of its proper divisors (185098698).

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

123051222 is a wasteful number, since it uses less digits than its factorization.

123051222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11077 (or 11074 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 123051222 is about 11092.8455321437. The cubic root of 123051222 is about 497.3880080903.

Subtracting 123051222 from its reverse (222150321), we obtain a palindrome (99099099).

The spelling of 123051222 in words is "one hundred twenty-three million, fifty-one thousand, two hundred twenty-two".