221101102002001 has 16 divisors (see below), whose sum is σ = 243859725603648. Its totient is φ = 199215108705600.

The previous prime is 221101102001963. The next prime is 221101102002019. The reversal of 221101102002001 is 100200201101122.

221101102002001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221101102002001 - 2⁷ = 221101102001873 is a prime.

It is a super-2 number, since 2×221101102002001² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221101102000001) 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, 1064079391 + ... + 1064287156.

It is an arithmetic number, because the mean of its divisors is an integer number (15241232850228).

Almost surely, 2^{221101102002001} is an apocalyptic number.

It is an amenable number.

221101102002001 is a deficient number, since it is larger than the sum of its proper divisors (22758623601647).

221101102002001 is a wasteful number, since it uses less digits than its factorization.

221101102002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128366752.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221101102002001 its reverse (100200201101122), we get a palindrome (321301303103123).

The spelling of 221101102002001 in words is "two hundred twenty-one trillion, one hundred one billion, one hundred two million, two thousand, one".