1021120112012 has 192 divisors, whose sum is σ = 2478470012928. Its totient is φ = 355131648000.

The previous prime is 1021120111969. The next prime is 1021120112021. The reversal of 1021120112012 is 2102110211201.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 267237062 + ... + 267240882.

It is an arithmetic number, because the mean of its divisors is an integer number (12908697984).

Almost surely, 2^{1021120112012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021120112012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239235006464).

1021120112012 is an abundant number, since it is smaller than the sum of its proper divisors (1457349900916).

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

1021120112012 is a wasteful number, since it uses less digits than its factorization.

1021120112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6040 (or 6038 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021120112012 its reverse (2102110211201), we get a palindrome (3123230323213).

The spelling of 1021120112012 in words is "one trillion, twenty-one billion, one hundred twenty million, one hundred twelve thousand, twelve".