1121220112056 has 64 divisors (see below), whose sum is σ = 3057968160000. Its totient is φ = 339753100800.

The previous prime is 1121220112031. The next prime is 1121220112057. The reversal of 1121220112056 is 6502110221211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121220112057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14547301 + ... + 14624171.

It is an arithmetic number, because the mean of its divisors is an integer number (47780752500).

Almost surely, 2^{1121220112056} is an apocalyptic number.

It is an amenable number.

1121220112056 is an abundant number, since it is smaller than the sum of its proper divisors (1936748047944).

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

1121220112056 is a wasteful number, since it uses less digits than its factorization.

1121220112056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132140 (or 132136 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 1121220112056 its reverse (6502110221211), we get a palindrome (7623330333267).

The spelling of 1121220112056 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twelve thousand, fifty-six".