20212011215 has 12 divisors (see below), whose sum is σ = 26659810632. Its totient is φ = 14699644080.

The previous prime is 20212011179. The next prime is 20212011221. The reversal of 20212011215 is 51211021202.

It is not a de Polignac number, because 20212011215 - 2²² = 20207816911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20212011193 and 20212011202.

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, 16703537 + ... + 16704746.

It is an arithmetic number, because the mean of its divisors is an integer number (2221650886).

Almost surely, 2^20212011215 is an apocalyptic number.

20212011215 is a deficient number, since it is larger than the sum of its proper divisors (6447799417).

20212011215 is a wasteful number, since it uses less digits than its factorization.

20212011215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33408310 (or 33408299 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 20212011215 its reverse (51211021202), we get a palindrome (71423032417).

The spelling of 20212011215 in words is "twenty billion, two hundred twelve million, eleven thousand, two hundred fifteen".