20001320202 has 16 divisors (see below), whose sum is σ = 40011741792. Its totient is φ = 6665589840.

The previous prime is 20001320149. The next prime is 20001320243. The reversal of 20001320202 is 20202310002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350488 + ... + 403539.

It is an arithmetic number, because the mean of its divisors is an integer number (2500733862).

Almost surely, 2^20001320202 is an apocalyptic number.

20001320202 is an abundant number, since it is smaller than the sum of its proper divisors (20010421590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001320202 is a wasteful number, since it uses less digits than its factorization.

20001320202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758453.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20001320202 its reverse (20202310002), we get a palindrome (40203630204).

The spelling of 20001320202 in words is "twenty billion, one million, three hundred twenty thousand, two hundred two".