1013220123320 has 64 divisors (see below), whose sum is σ = 2382746656320. Its totient is φ = 387034205184.

The previous prime is 1013220123313. The next prime is 1013220123337. The reversal of 1013220123320 is 233210223101.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1013220123292 and 1013220123301.

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, 334349 + ... + 1462268.

It is an arithmetic number, because the mean of its divisors is an integer number (37230416505).

Almost surely, 2^{1013220123320} is an apocalyptic number.

1013220123320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013220123320 is an abundant number, since it is smaller than the sum of its proper divisors (1369526533000).

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

1013220123320 is a wasteful number, since it uses less digits than its factorization.

1013220123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797264 (or 1797260 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1013220123320 its reverse (233210223101), we get a palindrome (1246430346421).

The spelling of 1013220123320 in words is "one trillion, thirteen billion, two hundred twenty million, one hundred twenty-three thousand, three hundred twenty".