212112209977 has 8 divisors (see below), whose sum is σ = 225085913280. Its totient is φ = 199451126160.

The previous prime is 212112209929. The next prime is 212112209989. The reversal of 212112209977 is 779902211212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212112209977 - 2¹¹ = 212112207929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212112299977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78153474 + ... + 78156187.

It is an arithmetic number, because the mean of its divisors is an integer number (28135739160).

Almost surely, 2^212112209977 is an apocalyptic number.

It is an amenable number.

212112209977 is a deficient number, since it is larger than the sum of its proper divisors (12973703303).

212112209977 is a wasteful number, since it uses less digits than its factorization.

212112209977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156309743.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 212112209977 in words is "two hundred twelve billion, one hundred twelve million, two hundred nine thousand, nine hundred seventy-seven".