1021331123144 has 16 divisors (see below), whose sum is σ = 1921153403520. Its totient is φ = 509023548880.

The previous prime is 1021331123143. The next prime is 1021331123147. The reversal of 1021331123144 is 4413211331201.

It is not an unprimeable number, because it can be changed into a prime (1021331123143) 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 3 ways as a sum of consecutive naturals, for example, 205248944 + ... + 205253919.

It is an arithmetic number, because the mean of its divisors is an integer number (120072087720).

Almost surely, 2^{1021331123144} is an apocalyptic number.

It is an amenable number.

1021331123144 is a deficient number, since it is larger than the sum of its proper divisors (899822280376).

1021331123144 is a wasteful number, since it uses less digits than its factorization.

1021331123144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410503180 (or 410503176 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 1021331123144 its reverse (4413211331201), we get a palindrome (5434542454345).

The spelling of 1021331123144 in words is "one trillion, twenty-one billion, three hundred thirty-one million, one hundred twenty-three thousand, one hundred forty-four".