1121231104020 has 72 divisors (see below), whose sum is σ = 3415180128360. Its totient is φ = 297754306560.

The previous prime is 1121231103917. The next prime is 1121231104033. The reversal of 1121231104020 is 204011321211.

1121231104020 is a `hidden beast` number, since 1 + 1 + 21 + 231 + 10 + 402 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12245192964 + 1108985911056 = 110658^2 + 1053084^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1121231103984 and 1121231104002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12879985 + ... + 12966744.

Almost surely, 2^{1121231104020} is an apocalyptic number.

1121231104020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121231104020 is an abundant number, since it is smaller than the sum of its proper divisors (2293949024340).

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

1121231104020 is a wasteful number, since it uses less digits than its factorization.

1121231104020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25846985 (or 25846980 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1121231104020 its reverse (204011321211), we get a palindrome (1325242425231).

The spelling of 1121231104020 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-one million, one hundred four thousand, twenty".