2112121211215 has 16 divisors (see below), whose sum is σ = 2535905232000. Its totient is φ = 1688790723232.

The previous prime is 2112121211209. The next prime is 2112121211219. The reversal of 2112121211215 is 5121121212112.

It is a cyclic number.

It is not a de Polignac number, because 2112121211215 - 2¹¹ = 2112121209167 is a prime.

It is a super-2 number, since 2×2112121211215² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112121211219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80914236 + ... + 80940334.

It is an arithmetic number, because the mean of its divisors is an integer number (158494077000).

Almost surely, 2^{2112121211215} is an apocalyptic number.

2112121211215 is a deficient number, since it is larger than the sum of its proper divisors (423784020785).

2112121211215 is a wasteful number, since it uses less digits than its factorization.

2112121211215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34166.

The product of its digits is 160, while the sum is 22.

Adding to 2112121211215 its reverse (5121121212112), we get a palindrome (7233242423327).

The spelling of 2112121211215 in words is "two trillion, one hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand, two hundred fifteen".