20212005015 has 12 divisors (see below), whose sum is σ = 35034142104. Its totient is φ = 10779735984.

The previous prime is 20212004999. The next prime is 20212005029. The reversal of 20212005015 is 51050021202.

It is not a de Polignac number, because 20212005015 - 2⁴ = 20212004999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224577789 + ... + 224577878.

It is an arithmetic number, because the mean of its divisors is an integer number (2919511842).

Almost surely, 2^20212005015 is an apocalyptic number.

20212005015 is a deficient number, since it is larger than the sum of its proper divisors (14822137089).

20212005015 is a wasteful number, since it uses less digits than its factorization.

20212005015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449155678 (or 449155675 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

Adding to 20212005015 its reverse (51050021202), we get a palindrome (71262026217).

The spelling of 20212005015 in words is "twenty billion, two hundred twelve million, five thousand, fifteen".