20212015113 has 6 divisors (see below), whose sum is σ = 29195132954. Its totient is φ = 13474676736.

The previous prime is 20212015081. The next prime is 20212015121. The reversal of 20212015113 is 31151021202.

It can be written as a sum of positive squares in only one way, i.e., 12081746889 + 8130268224 = 109917^2 + 90168^2 .

It is not a de Polignac number, because 20212015113 - 2⁵ = 20212015081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212015163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1122889720 + ... + 1122889737.

Almost surely, 2^20212015113 is an apocalyptic number.

It is an amenable number.

20212015113 is a deficient number, since it is larger than the sum of its proper divisors (8983117841).

20212015113 is a wasteful number, since it uses less digits than its factorization.

20212015113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245779463 (or 2245779460 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 20212015113 its reverse (31151021202), we get a palindrome (51363036315).

The spelling of 20212015113 in words is "twenty billion, two hundred twelve million, fifteen thousand, one hundred thirteen".