1121021022120 has 128 divisors (see below), whose sum is σ = 3575496556800. Its totient is φ = 280546433024.

The previous prime is 1121021022103. The next prime is 1121021022127. The reversal of 1121021022120 is 212201201211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1121021022120.

It is not an unprimeable number, because it can be changed into a prime (1121021022127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3685485 + ... + 3978044.

It is an arithmetic number, because the mean of its divisors is an integer number (27933566850).

Almost surely, 2^{1121021022120} is an apocalyptic number.

1121021022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121021022120 is an abundant number, since it is smaller than the sum of its proper divisors (2454475534680).

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

1121021022120 is a wasteful number, since it uses less digits than its factorization.

1121021022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663619 (or 7663615 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1121021022120 its reverse (212201201211), we get a palindrome (1333222223331).

The spelling of 1121021022120 in words is "one trillion, one hundred twenty-one billion, twenty-one million, twenty-two thousand, one hundred twenty".