1000120212120 has 32 divisors (see below), whose sum is σ = 3000360636720. Its totient is φ = 266698723200.

The previous prime is 1000120212097. The next prime is 1000120212173. The reversal of 1000120212120 is 212120210001.

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 = 1000120212096 and 1000120212105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4167167431 + ... + 4167167670.

Almost surely, 2^{1000120212120} is an apocalyptic number.

1000120212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000120212120 is an abundant number, since it is smaller than the sum of its proper divisors (2000240424600).

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

1000120212120 is a wasteful number, since it uses less digits than its factorization.

1000120212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8334335115 (or 8334335111 counting only the distinct ones).

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

Adding to 1000120212120 its reverse (212120210001), we get a palindrome (1212240422121).

The spelling of 1000120212120 in words is "one trillion, one hundred twenty million, two hundred twelve thousand, one hundred twenty".