221442302042 has 8 divisors (see below), whose sum is σ = 357714487956. Its totient is φ = 102204139392.

The previous prime is 221442301991. The next prime is 221442302099. The reversal of 221442302042 is 240203244122.

221442302042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 177258682441 + 44183619601 = 421021^2 + 210199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 8517011617 = 221442302042 / (2 + 2 + 1 + 4 + 4 + 2 + 3 + 0 + 2 + 0 + 4 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4258505783 + ... + 4258505834.

Almost surely, 2^221442302042 is an apocalyptic number.

221442302042 is a deficient number, since it is larger than the sum of its proper divisors (136272185914).

221442302042 is a wasteful number, since it uses less digits than its factorization.

221442302042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8517011632.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 221442302042 its reverse (240203244122), we get a palindrome (461645546164).

The spelling of 221442302042 in words is "two hundred twenty-one billion, four hundred forty-two million, three hundred two thousand, forty-two".