212155612115 has 16 divisors (see below), whose sum is σ = 257141126880. Its totient is φ = 168022003200.

The previous prime is 212155612087. The next prime is 212155612117. The reversal of 212155612115 is 511216551212.

It is not a de Polignac number, because 212155612115 - 2¹⁰ = 212155611091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212155612117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4591196 + ... + 4637174.

It is an arithmetic number, because the mean of its divisors is an integer number (16071320430).

Almost surely, 2^212155612115 is an apocalyptic number.

212155612115 is a deficient number, since it is larger than the sum of its proper divisors (44985514765).

212155612115 is a wasteful number, since it uses less digits than its factorization.

212155612115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55222.

The product of its digits is 6000, while the sum is 32.

The spelling of 212155612115 in words is "two hundred twelve billion, one hundred fifty-five million, six hundred twelve thousand, one hundred fifteen".