1121087780443 has 4 divisors (see below), whose sum is σ = 1142240380128. Its totient is φ = 1099935180760.

The previous prime is 1121087780429. The next prime is 1121087780447. The reversal of 1121087780443 is 3440877801211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121087780443 - 2⁵ = 1121087780411 is a prime.

It is a super-2 number, since 2×1121087780443² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121087780393 and 1121087780402.

It is not an unprimeable number, because it can be changed into a prime (1121087780447) 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, 10576299763 + ... + 10576299868.

It is an arithmetic number, because the mean of its divisors is an integer number (285560095032).

Almost surely, 2^{1121087780443} is an apocalyptic number.

1121087780443 is a deficient number, since it is larger than the sum of its proper divisors (21152599685).

1121087780443 is an equidigital number, since it uses as much as digits as its factorization.

1121087780443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21152599684.

The product of its (nonzero) digits is 301056, while the sum is 46.

The spelling of 1121087780443 in words is "one trillion, one hundred twenty-one billion, eighty-seven million, seven hundred eighty thousand, four hundred forty-three".