221102012012001 has 4 divisors (see below), whose sum is σ = 294802682682672. Its totient is φ = 147401341341332.

The previous prime is 221102012011987. The next prime is 221102012012051. The reversal of 221102012012001 is 100210210201122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221102012012001 - 2¹⁹ = 221102011487713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221102012012051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36850335335331 + ... + 36850335335336.

It is an arithmetic number, because the mean of its divisors is an integer number (73700670670668).

Almost surely, 2^{221102012012001} is an apocalyptic number.

It is an amenable number.

221102012012001 is a deficient number, since it is larger than the sum of its proper divisors (73700670670671).

221102012012001 is an equidigital number, since it uses as much as digits as its factorization.

221102012012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73700670670670.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221102012012001 its reverse (100210210201122), we get a palindrome (321312222213123).

The spelling of 221102012012001 in words is "two hundred twenty-one trillion, one hundred two billion, twelve million, twelve thousand, one".