1020020120112 has 160 divisors (see below), whose sum is σ = 3198827261952. Its totient is φ = 273414316032.

The previous prime is 1020020120039. The next prime is 1020020120113. The reversal of 1020020120112 is 2110210200201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1020020120113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1502593 + ... + 2073119.

Almost surely, 2^{1020020120112} is an apocalyptic number.

1020020120112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020020120112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599413630976).

1020020120112 is an abundant number, since it is smaller than the sum of its proper divisors (2178807141840).

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

1020020120112 is a wasteful number, since it uses less digits than its factorization.

1020020120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570875 (or 570869 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1020020120112 its reverse (2110210200201), we get a palindrome (3130230320313).

The spelling of 1020020120112 in words is "one trillion, twenty billion, twenty million, one hundred twenty thousand, one hundred twelve".