221246404642122 has 8 divisors (see below), whose sum is σ = 442492809284256. Its totient is φ = 73748801547372.

The previous prime is 221246404642073. The next prime is 221246404642127.

221246404642122 is nontrivially palindromic in base 10.

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

221246404642122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (221246404642127) by changing a digit.

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, 18437200386838 + ... + 18437200386849.

It is an arithmetic number, because the mean of its divisors is an integer number (55311601160532).

Almost surely, 2^{221246404642122} is an apocalyptic number.

221246404642122 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.

221246404642122 is a wasteful number, since it uses less digits than its factorization.

221246404642122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36874400773692.

The product of its (nonzero) digits is 589824, while the sum is 42.

It can be divided in two parts, 22124640 and 4642122, that added together give a palindrome (26766762).

The spelling of 221246404642122 in words is "two hundred twenty-one trillion, two hundred forty-six billion, four hundred four million, six hundred forty-two thousand, one hundred twenty-two".