1212044140541 has 16 divisors (see below), whose sum is σ = 1334811657984. Its totient is φ = 1093558584384.

The previous prime is 1212044140537. The next prime is 1212044140577. The reversal of 1212044140541 is 1450414402121.

It is a cyclic number.

It is not a de Polignac number, because 1212044140541 - 2² = 1212044140537 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847715 + ... + 1772768.

It is an arithmetic number, because the mean of its divisors is an integer number (83425728624).

Almost surely, 2^{1212044140541} is an apocalyptic number.

It is an amenable number.

1212044140541 is a deficient number, since it is larger than the sum of its proper divisors (122767517443).

1212044140541 is a wasteful number, since it uses less digits than its factorization.

1212044140541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621300.

The product of its (nonzero) digits is 5120, while the sum is 29.

Adding to 1212044140541 its reverse (1450414402121), we get a palindrome (2662458542662).

The spelling of 1212044140541 in words is "one trillion, two hundred twelve billion, forty-four million, one hundred forty thousand, five hundred forty-one".