20020201320 has 64 divisors (see below), whose sum is σ = 68640693120. Its totient is φ = 4576045824.

The previous prime is 20020201297. The next prime is 20020201321. The reversal of 20020201320 is 2310202002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20020201296 and 20020201305.

It is not an unprimeable number, because it can be changed into a prime (20020201321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11915947 + ... + 11917626.

It is an arithmetic number, because the mean of its divisors is an integer number (1072510830).

Almost surely, 2^20020201320 is an apocalyptic number.

20020201320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020201320 is an abundant number, since it is smaller than the sum of its proper divisors (48620491800).

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

20020201320 is a wasteful number, since it uses less digits than its factorization.

20020201320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23833594 (or 23833590 counting only the distinct ones).

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

Adding to 20020201320 its reverse (2310202002), we get a palindrome (22330403322).

The spelling of 20020201320 in words is "twenty billion, twenty million, two hundred one thousand, three hundred twenty".