20018201001002 has 8 divisors (see below), whose sum is σ = 31062725691300. Its totient is φ = 9663959103904.

The previous prime is 20018201000971. The next prime is 20018201001091. The reversal of 20018201001002 is 20010010281002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19082665193641 + 935535807361 = 4368371^2 + 967231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172570698227 + ... + 172570698342.

Almost surely, 2^{20018201001002} is an apocalyptic number.

20018201001002 is a deficient number, since it is larger than the sum of its proper divisors (11044524690298).

20018201001002 is a wasteful number, since it uses less digits than its factorization.

20018201001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345141396600.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20018201001002 its reverse (20010010281002), we get a palindrome (40028211282004).

The spelling of 20018201001002 in words is "twenty trillion, eighteen billion, two hundred one million, one thousand, two".