1131200123020 has 96 divisors (see below), whose sum is σ = 2752897593600. Its totient is φ = 386120390400.

The previous prime is 1131200122973. The next prime is 1131200123057. The reversal of 1131200123020 is 203210021311.

It is a super-2 number, since 2×1131200123020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131200122985 and 1131200123003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 785766 + ... + 1697005.

It is an arithmetic number, because the mean of its divisors is an integer number (28676016600).

Almost surely, 2^{1131200123020} is an apocalyptic number.

1131200123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131200123020 is an abundant number, since it is smaller than the sum of its proper divisors (1621697470580).

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

1131200123020 is a wasteful number, since it uses less digits than its factorization.

1131200123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482919 (or 2482917 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1131200123020 its reverse (203210021311), we get a palindrome (1334410144331).

The spelling of 1131200123020 in words is "one trillion, one hundred thirty-one billion, two hundred million, one hundred twenty-three thousand, twenty".