1123121001020 has 24 divisors (see below), whose sum is σ = 2439883555200. Its totient is φ = 433757076032.

The previous prime is 1123121001019. The next prime is 1123121001043. The reversal of 1123121001020 is 201001213211.

It is a super-2 number, since 2×1123121001020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123121000986 and 1123121001004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 968207180 + ... + 968208339.

It is an arithmetic number, because the mean of its divisors is an integer number (101661814800).

Almost surely, 2^{1123121001020} is an apocalyptic number.

1123121001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123121001020 is an abundant number, since it is smaller than the sum of its proper divisors (1316762554180).

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

1123121001020 is a wasteful number, since it uses less digits than its factorization.

1123121001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936415557 (or 1936415555 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1123121001020 its reverse (201001213211), we get a palindrome (1324122214231).

The spelling of 1123121001020 in words is "one trillion, one hundred twenty-three billion, one hundred twenty-one million, one thousand, twenty".