221403411001 has 4 divisors (see below), whose sum is σ = 227387287012. Its totient is φ = 215419534992.

The previous prime is 221403410989. The next prime is 221403411011. The reversal of 221403411001 is 100114304122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 144494255376 + 76909155625 = 380124^2 + 277325^2 .

It is a cyclic number.

It is not a de Polignac number, because 221403411001 - 2⁷ = 221403410873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221403411001.

It is not an unprimeable number, because it can be changed into a prime (221403411011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2991937950 + ... + 2991938023.

It is an arithmetic number, because the mean of its divisors is an integer number (56846821753).

Almost surely, 2^221403411001 is an apocalyptic number.

It is an amenable number.

221403411001 is a deficient number, since it is larger than the sum of its proper divisors (5983876011).

221403411001 is an equidigital number, since it uses as much as digits as its factorization.

221403411001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5983876010.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221403411001 its reverse (100114304122), we get a palindrome (321517715123).

The spelling of 221403411001 in words is "two hundred twenty-one billion, four hundred three million, four hundred eleven thousand, one".