221204021142441 has 16 divisors (see below), whose sum is σ = 312289011921600. Its totient is φ = 138794243455488.

The previous prime is 221204021142439. The next prime is 221204021142443. The reversal of 221204021142441 is 144241120402122.

It is an interprime number because it is at equal distance from previous prime (221204021142439) and next prime (221204021142443).

It is not a de Polignac number, because 221204021142441 - 2¹ = 221204021142439 is a prime.

It is a super-2 number, since 2×221204021142441² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221204021142399 and 221204021142408.

It is not an unprimeable number, because it can be changed into a prime (221204021142443) 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 15 ways as a sum of consecutive naturals, for example, 9957150 + ... + 23271288.

It is an arithmetic number, because the mean of its divisors is an integer number (19518063245100).

Almost surely, 2^{221204021142441} is an apocalyptic number.

It is an amenable number.

221204021142441 is a deficient number, since it is larger than the sum of its proper divisors (91084990779159).

221204021142441 is a wasteful number, since it uses less digits than its factorization.

221204021142441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13639928.

The product of its (nonzero) digits is 8192, while the sum is 30.

Adding to 221204021142441 its reverse (144241120402122), we get a palindrome (365445141544563).

The spelling of 221204021142441 in words is "two hundred twenty-one trillion, two hundred four billion, twenty-one million, one hundred forty-two thousand, four hundred forty-one".