1212144405117 has 8 divisors (see below), whose sum is σ = 1621944116160. Its totient is φ = 805220482080.

The previous prime is 1212144405029. The next prime is 1212144405133. The reversal of 1212144405117 is 7115044412121.

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

It is not a de Polignac number, because 1212144405117 - 2¹⁵ = 1212144372349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212144405137) 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, 718946017 + ... + 718947702.

It is an arithmetic number, because the mean of its divisors is an integer number (202743014520).

Almost surely, 2^{1212144405117} is an apocalyptic number.

It is an amenable number.

1212144405117 is a deficient number, since it is larger than the sum of its proper divisors (409799711043).

1212144405117 is a wasteful number, since it uses less digits than its factorization.

1212144405117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437894003.

The product of its (nonzero) digits is 8960, while the sum is 33.

Adding to 1212144405117 its reverse (7115044412121), we get a palindrome (8327188817238).

The spelling of 1212144405117 in words is "one trillion, two hundred twelve billion, one hundred forty-four million, four hundred five thousand, one hundred seventeen".