1021323012120 has 48 divisors (see below), whose sum is σ = 3319299790560. Its totient is φ = 272352803136.

The previous prime is 1021323012109. The next prime is 1021323012121. The reversal of 1021323012120 is 212103231201.

1021323012120 is a `hidden beast` number, since 10 + 213 + 230 + 1 + 212 + 0 = 666.

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 = 1021323012093 and 1021323012102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021323012121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1418503824 + ... + 1418504543.

It is an arithmetic number, because the mean of its divisors is an integer number (69152078970).

Almost surely, 2^{1021323012120} is an apocalyptic number.

1021323012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021323012120 is an abundant number, since it is smaller than the sum of its proper divisors (2297976778440).

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

1021323012120 is a wasteful number, since it uses less digits than its factorization.

1021323012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837008384 (or 2837008377 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1021323012120 its reverse (212103231201), we get a palindrome (1233426243321).

The spelling of 1021323012120 in words is "one trillion, twenty-one billion, three hundred twenty-three million, twelve thousand, one hundred twenty".