1121254404461 has 4 divisors (see below), whose sum is σ = 1121256522432. Its totient is φ = 1121252286492.

The previous prime is 1121254404421. The next prime is 1121254404467. The reversal of 1121254404461 is 1644044521211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121254404461 is a prime.

It is a super-2 number, since 2×1121254404461² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121254404467) 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, 508556 + ... + 1581498.

It is an arithmetic number, because the mean of its divisors is an integer number (280314130608).

Almost surely, 2^{1121254404461} is an apocalyptic number.

It is an amenable number.

1121254404461 is a deficient number, since it is larger than the sum of its proper divisors (2117971).

1121254404461 is a wasteful number, since it uses less digits than its factorization.

1121254404461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117970.

The product of its (nonzero) digits is 30720, while the sum is 35.

Adding to 1121254404461 its reverse (1644044521211), we get a palindrome (2765298925672).

The spelling of 1121254404461 in words is "one trillion, one hundred twenty-one billion, two hundred fifty-four million, four hundred four thousand, four hundred sixty-one".