1000012120120 has 96 divisors (see below), whose sum is σ = 2579739185520. Its totient is φ = 347515484160.

The previous prime is 1000012120099. The next prime is 1000012120141. The reversal of 1000012120120 is 210212100001.

It is an interprime number because it is at equal distance from previous prime (1000012120099) and next prime (1000012120141).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1000012120097 and 1000012120106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4235986 + ... + 4465825.

Almost surely, 2^{1000012120120} is an apocalyptic number.

1000012120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000012120120 is an abundant number, since it is smaller than the sum of its proper divisors (1579727065400).

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

1000012120120 is a wasteful number, since it uses less digits than its factorization.

1000012120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8701865 (or 8701848 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1000012120120 its reverse (210212100001), we get a palindrome (1210224220121).

The spelling of 1000012120120 in words is "one trillion, twelve million, one hundred twenty thousand, one hundred twenty".