221023304131242 has 8 divisors (see below), whose sum is σ = 442046608262496. Its totient is φ = 73674434710412.

The previous prime is 221023304131213. The next prime is 221023304131307. The reversal of 221023304131242 is 242131403320122.

It is a happy number.

221023304131242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

221023304131242 is an admirable number.

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, 18418608677598 + ... + 18418608677609.

It is an arithmetic number, because the mean of its divisors is an integer number (55255826032812).

Almost surely, 2^{221023304131242} is an apocalyptic number.

221023304131242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221023304131242 is a wasteful number, since it uses less digits than its factorization.

221023304131242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36837217355212.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 221023304131242 its reverse (242131403320122), we get a palindrome (463154707451364).

The spelling of 221023304131242 in words is "two hundred twenty-one trillion, twenty-three billion, three hundred four million, one hundred thirty-one thousand, two hundred forty-two".