1012220100120 has 32 divisors (see below), whose sum is σ = 3036660300720. Its totient is φ = 269925360000.

The previous prime is 1012220099999. The next prime is 1012220100131. The reversal of 1012220100120 is 210010222101.

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 = 1012220100096 and 1012220100105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4217583631 + ... + 4217583870.

Almost surely, 2^{1012220100120} is an apocalyptic number.

1012220100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012220100120 is an abundant number, since it is smaller than the sum of its proper divisors (2024440200600).

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

1012220100120 is a wasteful number, since it uses less digits than its factorization.

1012220100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8435167515 (or 8435167511 counting only the distinct ones).

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

Adding to 1012220100120 its reverse (210010222101), we get a palindrome (1222230322221).

The spelling of 1012220100120 in words is "one trillion, twelve billion, two hundred twenty million, one hundred thousand, one hundred twenty".