4221066645841 has 16 divisors (see below), whose sum is σ = 4259524838400. Its totient is φ = 4182832292800.

The previous prime is 4221066645833. The next prime is 4221066645857. The reversal of 4221066645841 is 1485466601224.

It is a cyclic number.

It is not a de Polignac number, because 4221066645841 - 2³ = 4221066645833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4221066649841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40017831 + ... + 40123171.

It is an arithmetic number, because the mean of its divisors is an integer number (266220302400).

Almost surely, 2^{4221066645841} is an apocalyptic number.

It is an amenable number.

4221066645841 is a deficient number, since it is larger than the sum of its proper divisors (38458192559).

4221066645841 is a wasteful number, since it uses less digits than its factorization.

4221066645841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106400.

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 4221066645841 in words is "four trillion, two hundred twenty-one billion, sixty-six million, six hundred forty-five thousand, eight hundred forty-one".