20020201097 has 8 divisors (see below), whose sum is σ = 21600076680. Its totient is φ = 18446019840.

The previous prime is 20020201087. The next prime is 20020201099. The reversal of 20020201097 is 79010202002.

It can be written as a sum of positive squares in 4 ways, for example, as 2260907401 + 17759293696 = 47549^2 + 133264^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020201097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020201099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1416272 + ... + 1430337.

It is an arithmetic number, because the mean of its divisors is an integer number (2700009585).

Almost surely, 2^20020201097 is an apocalyptic number.

It is an amenable number.

20020201097 is a deficient number, since it is larger than the sum of its proper divisors (1579875583).

20020201097 is a wasteful number, since it uses less digits than its factorization.

20020201097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847163.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 20020201097 its reverse (79010202002), we get a palindrome (99030403099).

The spelling of 20020201097 in words is "twenty billion, twenty million, two hundred one thousand, ninety-seven".