221110002001 has 16 divisors (see below), whose sum is σ = 257574099328. Its totient is φ = 185893833600.

The previous prime is 221110001993. The next prime is 221110002007. The reversal of 221110002001 is 100200011122.

It is a cyclic number.

It is not a de Polignac number, because 221110002001 - 2³ = 221110001993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221110002007) 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, 1102815 + ... + 1287796.

It is an arithmetic number, because the mean of its divisors is an integer number (16098381208).

Almost surely, 2^221110002001 is an apocalyptic number.

It is an amenable number.

221110002001 is a deficient number, since it is larger than the sum of its proper divisors (36464097327).

221110002001 is a wasteful number, since it uses less digits than its factorization.

221110002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390872.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221110002001 its reverse (100200011122), we get a palindrome (321310013123).

The spelling of 221110002001 in words is "two hundred twenty-one billion, one hundred ten million, two thousand, one".