1020111311320 has 32 divisors (see below), whose sum is σ = 2329507926000. Its totient is φ = 401954306688.

The previous prime is 1020111311287. The next prime is 1020111311321. The reversal of 1020111311320 is 231131110201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1020111311294 and 1020111311303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020111311321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190316595 + ... + 190321954.

Almost surely, 2^{1020111311320} is an apocalyptic number.

1020111311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020111311320 is an abundant number, since it is smaller than the sum of its proper divisors (1309396614680).

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

1020111311320 is a wasteful number, since it uses less digits than its factorization.

1020111311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380638627 (or 380638623 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1020111311320 its reverse (231131110201), we get a palindrome (1251242421521).

The spelling of 1020111311320 in words is "one trillion, twenty billion, one hundred eleven million, three hundred eleven thousand, three hundred twenty".