221421242320042 has 8 divisors (see below), whose sum is σ = 346572379283616. Its totient is φ = 105897115892172.

The previous prime is 221421242320039. The next prime is 221421242320139. The reversal of 221421242320042 is 240023242124122.

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

It is a junction number, because it is equal to n+sod(n) for n = 221421242319986 and 221421242320013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2406752633868 + ... + 2406752633959.

It is an arithmetic number, because the mean of its divisors is an integer number (43321547410452).

Almost surely, 2^{221421242320042} is an apocalyptic number.

221421242320042 is a deficient number, since it is larger than the sum of its proper divisors (125151136963574).

221421242320042 is a wasteful number, since it uses less digits than its factorization.

221421242320042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813505267852.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 221421242320042 its reverse (240023242124122), we get a palindrome (461444484444164).

The spelling of 221421242320042 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, two hundred forty-two million, three hundred twenty thousand, forty-two".