220201100010001 has 4 divisors (see below), whose sum is σ = 240219381829104. Its totient is φ = 200182818190900.

The previous prime is 220201100009959. The next prime is 220201100010029. The reversal of 220201100010001 is 100010001102022.

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 220201100010001 - 2¹⁹ = 220201099485713 is a prime.

It is a super-2 number, since 2×220201100010001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220201100010001.

It is not an unprimeable number, because it can be changed into a prime (220201100019001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10009140909535 + ... + 10009140909556.

It is an arithmetic number, because the mean of its divisors is an integer number (60054845457276).

Almost surely, 2^{220201100010001} is an apocalyptic number.

It is an amenable number.

220201100010001 is a deficient number, since it is larger than the sum of its proper divisors (20018281819103).

220201100010001 is a wasteful number, since it uses less digits than its factorization.

220201100010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20018281819102.

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

Adding to 220201100010001 its reverse (100010001102022), we get a palindrome (320211101112023).

The spelling of 220201100010001 in words is "two hundred twenty trillion, two hundred one billion, one hundred million, ten thousand, one".