222151042 has 4 divisors (see below), whose sum is σ = 333226566. Its totient is φ = 111075520.

The previous prime is 222151001. The next prime is 222151073. The reversal of 222151042 is 240151222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 212547241 + 9603801 = 14579^2 + 3099^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55537759 + ... + 55537762.

Almost surely, 2^222151042 is an apocalyptic number.

222151042 is a deficient number, since it is larger than the sum of its proper divisors (111075524).

222151042 is a wasteful number, since it uses less digits than its factorization.

222151042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111075523.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 222151042 is about 14904.7322015526. The cubic root of 222151042 is about 605.6421858473.

The spelling of 222151042 in words is "two hundred twenty-two million, one hundred fifty-one thousand, forty-two".