1220212120120 has 64 divisors (see below), whose sum is σ = 3168754603200. Its totient is φ = 414216268800.

The previous prime is 1220212120111. The next prime is 1220212120133. The reversal of 1220212120120 is 210212120221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220212120094 and 1220212120103.

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 15 ways as a sum of consecutive naturals, for example, 21545485 + ... + 21602044.

It is an arithmetic number, because the mean of its divisors is an integer number (49511790675).

Almost surely, 2^{1220212120120} is an apocalyptic number.

1220212120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220212120120 is an abundant number, since it is smaller than the sum of its proper divisors (1948542483080).

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

1220212120120 is a wasteful number, since it uses less digits than its factorization.

1220212120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43147648 (or 43147644 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220212120120 its reverse (210212120221), we get a palindrome (1430424240341).

The spelling of 1220212120120 in words is "one trillion, two hundred twenty billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty".