222115142 has 4 divisors (see below), whose sum is σ = 333172716. Its totient is φ = 111057570.

The previous prime is 222115109. The next prime is 222115199. The reversal of 222115142 is 241511222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241511222 = 2 ⋅120755611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55528784 + ... + 55528787.

It is an arithmetic number, because the mean of its divisors is an integer number (83293179).

Almost surely, 2^222115142 is an apocalyptic number.

222115142 is a deficient number, since it is larger than the sum of its proper divisors (111057574).

222115142 is a wasteful number, since it uses less digits than its factorization.

222115142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111057573.

The product of its digits is 320, while the sum is 20.

The square root of 222115142 is about 14903.5278373947. The cubic root of 222115142 is about 605.6095598082.

Adding to 222115142 its reverse (241511222), we get a palindrome (463626364).

The spelling of 222115142 in words is "two hundred twenty-two million, one hundred fifteen thousand, one hundred forty-two".