1012221100120 has 64 divisors (see below), whose sum is σ = 2282993496000. Its totient is φ = 403912396800.

The previous prime is 1012221100109. The next prime is 1012221100223. The reversal of 1012221100120 is 210011222101.

It is a self number, because there is not a number n which added to its sum of digits gives 1012221100120.

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 15 ways as a sum of consecutive naturals, for example, 33616912 + ... + 33647008.

It is an arithmetic number, because the mean of its divisors is an integer number (35671773375).

Almost surely, 2^{1012221100120} is an apocalyptic number.

1012221100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012221100120 is an abundant number, since it is smaller than the sum of its proper divisors (1270772395880).

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

1012221100120 is a wasteful number, since it uses less digits than its factorization.

1012221100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32108 (or 32104 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012221100120 its reverse (210011222101), we get a palindrome (1222232322221).

The spelling of 1012221100120 in words is "one trillion, twelve billion, two hundred twenty-one million, one hundred thousand, one hundred twenty".