1020065123220 has 192 divisors, whose sum is σ = 3426910212096. Its totient is φ = 223409502720.

The previous prime is 1020065123177. The next prime is 1020065123237. The reversal of 1020065123220 is 223215600201.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 861514 + ... + 1668033.

It is an arithmetic number, because the mean of its divisors is an integer number (17848490688).

Almost surely, 2^{1020065123220} is an apocalyptic number.

1020065123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020065123220 is an abundant number, since it is smaller than the sum of its proper divisors (2406845088876).

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

1020065123220 is a wasteful number, since it uses less digits than its factorization.

1020065123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529630 (or 2529628 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 1020065123220 in words is "one trillion, twenty billion, sixty-five million, one hundred twenty-three thousand, two hundred twenty".