1121243466461 has 16 divisors (see below), whose sum is σ = 1197267825600. Its totient is φ = 1048112956800.

The previous prime is 1121243466457. The next prime is 1121243466503. The reversal of 1121243466461 is 1646643421211.

It is a cyclic number.

It is not a de Polignac number, because 1121243466461 - 2² = 1121243466457 is a prime.

It is a super-2 number, since 2×1121243466461² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121243466451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3443531 + ... + 3755048.

It is an arithmetic number, because the mean of its divisors is an integer number (74829239100).

Almost surely, 2^{1121243466461} is an apocalyptic number.

It is an amenable number.

1121243466461 is a deficient number, since it is larger than the sum of its proper divisors (76024359139).

1121243466461 is a wasteful number, since it uses less digits than its factorization.

1121243466461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7198780.

The product of its digits is 165888, while the sum is 41.

Adding to 1121243466461 its reverse (1646643421211), we get a palindrome (2767886887672).

The spelling of 1121243466461 in words is "one trillion, one hundred twenty-one billion, two hundred forty-three million, four hundred sixty-six thousand, four hundred sixty-one".