1021131313320 has 64 divisors (see below), whose sum is σ = 3065462936640. Its totient is φ = 272117772800.

The previous prime is 1021131313291. The next prime is 1021131313343. The reversal of 1021131313320 is 233131311201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2695146 + ... + 3050585.

It is an arithmetic number, because the mean of its divisors is an integer number (47897858385).

Almost surely, 2^{1021131313320} is an apocalyptic number.

1021131313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021131313320 is an abundant number, since it is smaller than the sum of its proper divisors (2044331623320).

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

1021131313320 is a wasteful number, since it uses less digits than its factorization.

1021131313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747226 (or 5747222 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1021131313320 its reverse (233131311201), we get a palindrome (1254262624521).

The spelling of 1021131313320 in words is "one trillion, twenty-one billion, one hundred thirty-one million, three hundred thirteen thousand, three hundred twenty".