212011122987 has 12 divisors (see below), whose sum is σ = 314514999760. Its totient is φ = 137520728208.

The previous prime is 212011122977. The next prime is 212011122997. The reversal of 212011122987 is 789221110212.

It is an interprime number because it is at equal distance from previous prime (212011122977) and next prime (212011122997).

It is not a de Polignac number, because 212011122987 - 2⁴ = 212011122971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212011122937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318334687 + ... + 318335352.

Almost surely, 2^212011122987 is an apocalyptic number.

212011122987 is a deficient number, since it is larger than the sum of its proper divisors (102503876773).

212011122987 is a wasteful number, since it uses less digits than its factorization.

212011122987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636670082 (or 636670079 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 212011122987 in words is "two hundred twelve billion, eleven million, one hundred twenty-two thousand, nine hundred eighty-seven".