1020020112120 has 128 divisors (see below), whose sum is σ = 3163456296000. Its totient is φ = 262936350720.

The previous prime is 1020020112113. The next prime is 1020020112157. The reversal of 1020020112120 is 212110200201.

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

It is a junction number, because it is equal to n+sod(n) for n = 1020020112096 and 1020020112105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414735 + ... + 1487294.

Almost surely, 2^{1020020112120} is an apocalyptic number.

1020020112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020020112120 is an abundant number, since it is smaller than the sum of its proper divisors (2143436183880).

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

1020020112120 is a wasteful number, since it uses less digits than its factorization.

1020020112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902193 (or 1902189 counting only the distinct ones).

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

Adding to 1020020112120 its reverse (212110200201), we get a palindrome (1232130312321).

The spelling of 1020020112120 in words is "one trillion, twenty billion, twenty million, one hundred twelve thousand, one hundred twenty".