20010020121001 has 4 divisors (see below), whose sum is σ = 20013907831632. Its totient is φ = 20006132410372.

The previous prime is 20010020120971. The next prime is 20010020121037. The reversal of 20010020121001 is 10012102001002.

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 20010020121001 - 2⁵ = 20010020120969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010020121401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943847595 + ... + 1943857888.

It is an arithmetic number, because the mean of its divisors is an integer number (5003476957908).

Almost surely, 2^{20010020121001} is an apocalyptic number.

It is an amenable number.

20010020121001 is a deficient number, since it is larger than the sum of its proper divisors (3887710631).

20010020121001 is an equidigital number, since it uses as much as digits as its factorization.

20010020121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3887710630.

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

Adding to 20010020121001 its reverse (10012102001002), we get a palindrome (30022122122003).

The spelling of 20010020121001 in words is "twenty trillion, ten billion, twenty million, one hundred twenty-one thousand, one".