201221002220001 has 16 divisors (see below), whose sum is σ = 284100169852800. Its totient is φ = 126245888080128.

The previous prime is 201221002219973. The next prime is 201221002220027. The reversal of 201221002220001 is 100022200122102.

201221002220001 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 201221002220001 - 2⁴⁷ = 60483513864673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201221002220071) 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, 162298861 + ... + 163533978.

It is an arithmetic number, because the mean of its divisors is an integer number (17756260615800).

Almost surely, 2^{201221002220001} is an apocalyptic number.

It is an amenable number.

201221002220001 is a deficient number, since it is larger than the sum of its proper divisors (82879167632799).

201221002220001 is a wasteful number, since it uses less digits than its factorization.

201221002220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325844968.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201221002220001 its reverse (100022200122102), we get a palindrome (301243202342103).

The spelling of 201221002220001 in words is "two hundred one trillion, two hundred twenty-one billion, two million, two hundred twenty thousand, one".