1121331211056 has 60 divisors (see below), whose sum is σ = 3586479987792. Its totient is φ = 320380345728.

The previous prime is 1121331211037. The next prime is 1121331211057. The reversal of 1121331211056 is 6501121331211.

1121331211056 is a `hidden beast` number, since 112 + 1 + 331 + 211 + 0 + 5 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1121331211057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 556214871 + ... + 556216886.

Almost surely, 2^{1121331211056} is an apocalyptic number.

1121331211056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1121331211056 is an abundant number, since it is smaller than the sum of its proper divisors (2465148776736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121331211056 is a wasteful number, since it uses less digits than its factorization.

1121331211056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112431778 (or 1112431769 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

Adding to 1121331211056 its reverse (6501121331211), we get a palindrome (7622452542267).

The spelling of 1121331211056 in words is "one trillion, one hundred twenty-one billion, three hundred thirty-one million, two hundred eleven thousand, fifty-six".