20021033115 has 32 divisors (see below), whose sum is σ = 37466265600. Its totient is φ = 10115889120.

The previous prime is 20021033099. The next prime is 20021033119. The reversal of 20021033115 is 51133012002.

It is not a de Polignac number, because 20021033115 - 2⁴ = 20021033099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021033119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3900171 + ... + 3905300.

It is an arithmetic number, because the mean of its divisors is an integer number (1170820800).

Almost surely, 2^20021033115 is an apocalyptic number.

20021033115 is a deficient number, since it is larger than the sum of its proper divisors (17445232485).

20021033115 is a wasteful number, since it uses less digits than its factorization.

20021033115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805504 (or 7805498 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 20021033115 its reverse (51133012002), we get a palindrome (71154045117).

The spelling of 20021033115 in words is "twenty billion, twenty-one million, thirty-three thousand, one hundred fifteen".