1212865055079 has 8 divisors (see below), whose sum is σ = 1621734579312. Its totient is φ = 806286117120.

The previous prime is 1212865055069. The next prime is 1212865055089. The reversal of 1212865055079 is 9705505682121.

It is an interprime number because it is at equal distance from previous prime (1212865055069) and next prime (1212865055089).

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

It is not a de Polignac number, because 1212865055079 - 2¹¹ = 1212865053031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212865055069) 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, 572645332 + ... + 572647449.

It is an arithmetic number, because the mean of its divisors is an integer number (202716822414).

Almost surely, 2^{1212865055079} is an apocalyptic number.

1212865055079 is a deficient number, since it is larger than the sum of its proper divisors (408869524233).

1212865055079 is a wasteful number, since it uses less digits than its factorization.

1212865055079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145293137.

The product of its (nonzero) digits is 1512000, while the sum is 51.

The spelling of 1212865055079 in words is "one trillion, two hundred twelve billion, eight hundred sixty-five million, fifty-five thousand, seventy-nine".