1212044142501 has 6 divisors (see below), whose sum is σ = 1750730428070. Its totient is φ = 808029428328.

The previous prime is 1212044142497. The next prime is 1212044142559. The reversal of 1212044142501 is 1052414402121.

1212044142501 is a `hidden beast` number, since 1 + 2 + 12 + 0 + 4 + 4 + 142 + 501 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1204220916900 + 7823225601 = 1097370^2 + 88449^2 .

It is not a de Polignac number, because 1212044142501 - 2² = 1212044142497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212044140501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67335785686 + ... + 67335785703.

Almost surely, 2^{1212044142501} is an apocalyptic number.

It is an amenable number.

1212044142501 is a deficient number, since it is larger than the sum of its proper divisors (538686285569).

1212044142501 is a wasteful number, since it uses less digits than its factorization.

1212044142501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134671571395 (or 134671571392 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 1212044142501 its reverse (1052414402121), we get a palindrome (2264458544622).

The spelling of 1212044142501 in words is "one trillion, two hundred twelve billion, forty-four million, one hundred forty-two thousand, five hundred one".