1020321112111 has 12 divisors (see below), whose sum is σ = 1191998173392. Its totient is φ = 870807463008.

The previous prime is 1020321112093. The next prime is 1020321112117. The reversal of 1020321112111 is 1112111230201.

It is a happy number.

It is not a de Polignac number, because 1020321112111 - 2¹⁹ = 1020320587823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020321112117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44672875 + ... + 44695708.

It is an arithmetic number, because the mean of its divisors is an integer number (99333181116).

Almost surely, 2^{1020321112111} is an apocalyptic number.

1020321112111 is a deficient number, since it is larger than the sum of its proper divisors (171677061281).

1020321112111 is an equidigital number, since it uses as much as digits as its factorization.

1020321112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89368830 (or 89368823 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1020321112111 its reverse (1112111230201), we get a palindrome (2132432342312).

The spelling of 1020321112111 in words is "one trillion, twenty billion, three hundred twenty-one million, one hundred twelve thousand, one hundred eleven".