1020121343320 has 64 divisors (see below), whose sum is σ = 2320176700800. Its totient is φ = 403628812800.

The previous prime is 1020121343261. The next prime is 1020121343341. The reversal of 1020121343320 is 233431210201.

It is a junction number, because it is equal to n+sod(n) for n = 1020121343291 and 1020121343300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4200657 + ... + 4436863.

It is an arithmetic number, because the mean of its divisors is an integer number (36252760950).

Almost surely, 2^{1020121343320} is an apocalyptic number.

1020121343320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020121343320 is an abundant number, since it is smaller than the sum of its proper divisors (1300055357480).

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

1020121343320 is a wasteful number, since it uses less digits than its factorization.

1020121343320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237388 (or 237384 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1020121343320 its reverse (233431210201), we get a palindrome (1253552553521).

The spelling of 1020121343320 in words is "one trillion, twenty billion, one hundred twenty-one million, three hundred forty-three thousand, three hundred twenty".