1211124143441 has 4 divisors (see below), whose sum is σ = 1282366740132. Its totient is φ = 1139881546752.

The previous prime is 1211124143431. The next prime is 1211124143491. The reversal of 1211124143441 is 1443414211121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 883477804225 + 327646339216 = 939935^2 + 572404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211124143441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211124143431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35621298320 + ... + 35621298353.

It is an arithmetic number, because the mean of its divisors is an integer number (320591685033).

Almost surely, 2^{1211124143441} is an apocalyptic number.

It is an amenable number.

1211124143441 is a deficient number, since it is larger than the sum of its proper divisors (71242596691).

1211124143441 is an equidigital number, since it uses as much as digits as its factorization.

1211124143441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71242596690.

The product of its digits is 3072, while the sum is 29.

Adding to 1211124143441 its reverse (1443414211121), we get a palindrome (2654538354562).

The spelling of 1211124143441 in words is "one trillion, two hundred eleven billion, one hundred twenty-four million, one hundred forty-three thousand, four hundred forty-one".