1121220421024 has 24 divisors (see below), whose sum is σ = 2408075677728. Its totient is φ = 509645645760.

The previous prime is 1121220421001. The next prime is 1121220421039. The reversal of 1121220421024 is 4201240221211.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1121220420986 and 1121220421004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1592642292 + ... + 1592642995.

It is an arithmetic number, because the mean of its divisors is an integer number (100336486572).

Almost surely, 2^{1121220421024} is an apocalyptic number.

It is an amenable number.

1121220421024 is an abundant number, since it is smaller than the sum of its proper divisors (1286855256704).

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

1121220421024 is a wasteful number, since it uses less digits than its factorization.

1121220421024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185285308 (or 3185285300 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 1121220421024 its reverse (4201240221211), we get a palindrome (5322460642235).

The spelling of 1121220421024 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, four hundred twenty-one thousand, twenty-four".