220120020001 has 4 divisors (see below), whose sum is σ = 251565737152. Its totient is φ = 188674302852.

The previous prime is 220120019929. The next prime is 220120020049. The reversal of 220120020001 is 100020021022.

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 not a de Polignac number, because 220120020001 - 2⁹ = 220120019489 is a prime.

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 220120020001.

It is not an unprimeable number, because it can be changed into a prime (220120060001) 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, 15722858565 + ... + 15722858578.

It is an arithmetic number, because the mean of its divisors is an integer number (62891434288).

Almost surely, 2^220120020001 is an apocalyptic number.

It is an amenable number.

220120020001 is a deficient number, since it is larger than the sum of its proper divisors (31445717151).

220120020001 is an equidigital number, since it uses as much as digits as its factorization.

220120020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31445717150.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 220120020001 its reverse (100020021022), we get a palindrome (320140041023).

The spelling of 220120020001 in words is "two hundred twenty billion, one hundred twenty million, twenty thousand, one".