1220100200120 has 16 divisors (see below), whose sum is σ = 2745225450360. Its totient is φ = 488040080032.

The previous prime is 1220100200089. The next prime is 1220100200173. The reversal of 1220100200120 is 210020010221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15251252462 + ... + 15251252541.

Almost surely, 2^{1220100200120} is an apocalyptic number.

1220100200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220100200120 is an abundant number, since it is smaller than the sum of its proper divisors (1525125250240).

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

1220100200120 is a wasteful number, since it uses less digits than its factorization.

1220100200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30502505014 (or 30502505010 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1220100200120 its reverse (210020010221), we get a palindrome (1430120210341).

The spelling of 1220100200120 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred thousand, one hundred twenty".