212239146682369 has 8 divisors (see below), whose sum is σ = 212608355817608. Its totient is φ = 211869942312960.

The previous prime is 212239146682291. The next prime is 212239146682391. The reversal of 212239146682369 is 963286641932212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 171633895231744 + 40605251450625 = 13100912^2 + 6372225^2 .

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 212239146682369 - 2²³ = 212239138293761 is a prime.

It is a super-2 number, since 2×212239146682369² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212239146682369.

It is not an unprimeable number, because it can be changed into a prime (212239146682769) 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 7 ways as a sum of consecutive naturals, for example, 94651309 + ... + 96867685.

It is an arithmetic number, because the mean of its divisors is an integer number (26576044477201).

Almost surely, 2^{212239146682369} is an apocalyptic number.

It is an amenable number.

212239146682369 is a deficient number, since it is larger than the sum of its proper divisors (369209135239).

212239146682369 is a wasteful number, since it uses less digits than its factorization.

212239146682369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382915.

The product of its digits is 80621568, while the sum is 64.

The spelling of 212239146682369 in words is "two hundred twelve trillion, two hundred thirty-nine billion, one hundred forty-six million, six hundred eighty-two thousand, three hundred sixty-nine".