222122142 has 32 divisors (see below), whose sum is σ = 538479360. Its totient is φ = 67309560.

The previous prime is 222122081. The next prime is 222122149. The reversal of 222122142 is 241221222.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222122149) 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, 186378 + ... + 187565.

It is an arithmetic number, because the mean of its divisors is an integer number (16827480).

Almost surely, 2^222122142 is an apocalyptic number.

222122142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

222122142 is an abundant number, since it is smaller than the sum of its proper divisors (316357218).

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

222122142 is a wasteful number, since it uses less digits than its factorization.

222122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373965 (or 373959 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 222122142 is about 14903.7626792700. The cubic root of 222122142 is about 605.6159217073.

Adding to 222122142 its reverse (241221222), we get a palindrome (463343364).

The spelling of 222122142 in words is "two hundred twenty-two million, one hundred twenty-two thousand, one hundred forty-two".