212085716869 has 8 divisors (see below), whose sum is σ = 240421055840. Its totient is φ = 185467671216.

The previous prime is 212085716809. The next prime is 212085716879. The reversal of 212085716869 is 968617580212.

It is a happy number.

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 212085716869 - 2¹³ = 212085708677 is a prime.

It is a super-2 number, since 2×212085716869² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212085716809) 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, 429323067 + ... + 429323560.

It is an arithmetic number, because the mean of its divisors is an integer number (30052631980).

Almost surely, 2^212085716869 is an apocalyptic number.

It is an amenable number.

212085716869 is a deficient number, since it is larger than the sum of its proper divisors (28335338971).

212085716869 is a wasteful number, since it uses less digits than its factorization.

212085716869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858646659.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 212085716869 in words is "two hundred twelve billion, eighty-five million, seven hundred sixteen thousand, eight hundred sixty-nine".