1020111210112 has 64 divisors (see below), whose sum is σ = 2091716121600. Its totient is φ = 495343180800.

The previous prime is 1020111210071. The next prime is 1020111210163. The reversal of 1020111210112 is 2110121110201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1020111210112² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020111210092 and 1020111210101.

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 7 ways as a sum of consecutive naturals, for example, 210064 + ... + 1443727.

It is an arithmetic number, because the mean of its divisors is an integer number (32683064400).

Almost surely, 2^{1020111210112} is an apocalyptic number.

It is an amenable number.

1020111210112 is an abundant number, since it is smaller than the sum of its proper divisors (1071604911488).

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

1020111210112 is an equidigital number, since it uses as much as digits as its factorization.

1020111210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653945 (or 1653933 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1020111210112 its reverse (2110121110201), we get a palindrome (3130232320313).

The spelling of 1020111210112 in words is "one trillion, twenty billion, one hundred eleven million, two hundred ten thousand, one hundred twelve".