120000001220 has 48 divisors (see below), whose sum is σ = 274971666816. Its totient is φ = 43626432000.

The previous prime is 120000001153. The next prime is 120000001307. The reversal of 120000001220 is 22100000021.

It is a junction number, because it is equal to n+sod(n) for n = 120000001198 and 120000001207.

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 15 ways as a sum of consecutive naturals, for example, 943625 + ... + 1063215.

It is an arithmetic number, because the mean of its divisors is an integer number (5728576392).

Almost surely, 2^120000001220 is an apocalyptic number.

120000001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120000001220 is an abundant number, since it is smaller than the sum of its proper divisors (154971665596).

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

120000001220 is a wasteful number, since it uses less digits than its factorization.

120000001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124172 (or 124170 counting only the distinct ones).

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

Adding to 120000001220 its reverse (22100000021), we get a palindrome (142100001241).

The spelling of 120000001220 in words is "one hundred twenty billion, one thousand, two hundred twenty".