221110220001 has 16 divisors (see below), whose sum is σ = 321733628928. Its totient is φ = 133956709200.

The previous prime is 221110219997. The next prime is 221110220003. The reversal of 221110220001 is 100022011122.

It is not a de Polignac number, because 221110220001 - 2² = 221110219997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221110220003) 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, 1146301 + ... + 1325226.

It is an arithmetic number, because the mean of its divisors is an integer number (20108351808).

Almost surely, 2^221110220001 is an apocalyptic number.

It is an amenable number.

221110220001 is a deficient number, since it is larger than the sum of its proper divisors (100623408927).

221110220001 is a wasteful number, since it uses less digits than its factorization.

221110220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474252.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221110220001 its reverse (100022011122), we get a palindrome (321132231123).

The spelling of 221110220001 in words is "two hundred twenty-one billion, one hundred ten million, two hundred twenty thousand, one".