20055203210001 has 4 divisors (see below), whose sum is σ = 26740270946672. Its totient is φ = 13370135473332.

The previous prime is 20055203209883. The next prime is 20055203210017. The reversal of 20055203210001 is 10001230255002.

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 20055203210001 - 2¹³ = 20055203201809 is a prime.

It is a super-2 number, since 2×20055203210001² (a number of 27 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 20055203210001.

It is not an unprimeable number, because it can be changed into a prime (20055203212001) 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, 3342533868331 + ... + 3342533868336.

It is an arithmetic number, because the mean of its divisors is an integer number (6685067736668).

Almost surely, 2^{20055203210001} is an apocalyptic number.

It is an amenable number.

20055203210001 is a deficient number, since it is larger than the sum of its proper divisors (6685067736671).

20055203210001 is an equidigital number, since it uses as much as digits as its factorization.

20055203210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6685067736670.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 20055203210001 its reverse (10001230255002), we get a palindrome (30056433465003).

The spelling of 20055203210001 in words is "twenty trillion, fifty-five billion, two hundred three million, two hundred ten thousand, one".