222123132 has 144 divisors (see below), whose sum is σ = 705100032. Its totient is φ = 57277440.

The previous prime is 222123131. The next prime is 222123133. The reversal of 222123132 is 231321222.

It is an interprime number because it is at equal distance from previous prime (222123131) and next prime (222123133).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222123131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 629068 + ... + 629420.

It is an arithmetic number, because the mean of its divisors is an integer number (4896528).

Almost surely, 2^222123132 is an apocalyptic number.

222123132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222123132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352550016).

222123132 is an abundant number, since it is smaller than the sum of its proper divisors (482976900).

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

222123132 is a wasteful number, since it uses less digits than its factorization.

222123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 603 counting only the distinct ones).

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

The square root of 222123132 is about 14903.7958923222. The cubic root of 222123132 is about 605.6168214508.

Adding to 222123132 its reverse (231321222), we get a palindrome (453444354).

The spelling of 222123132 in words is "two hundred twenty-two million, one hundred twenty-three thousand, one hundred thirty-two".