221443714421641 has 8 divisors (see below), whose sum is σ = 224247089139200. Its totient is φ = 218640346947360.

The previous prime is 221443714421623. The next prime is 221443714421647. The reversal of 221443714421641 is 146124417344122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 221443714421641 - 2²⁹ = 221443177550729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221443714421591 and 221443714421600.

It is not an unprimeable number, because it can be changed into a prime (221443714421647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87306256 + ... + 89806846.

It is an arithmetic number, because the mean of its divisors is an integer number (28030886142400).

Almost surely, 2^{221443714421641} is an apocalyptic number.

It is an amenable number.

221443714421641 is a deficient number, since it is larger than the sum of its proper divisors (2803374717559).

221443714421641 is a wasteful number, since it uses less digits than its factorization.

221443714421641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621639.

The product of its digits is 1032192, while the sum is 46.

The spelling of 221443714421641 in words is "two hundred twenty-one trillion, four hundred forty-three billion, seven hundred fourteen million, four hundred twenty-one thousand, six hundred forty-one".