1220012312120 has 32 divisors (see below), whose sum is σ = 3137174517600. Its totient is φ = 418289935488.

The previous prime is 1220012312111. The next prime is 1220012312153. The reversal of 1220012312120 is 212132100221.

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 7 ways as a sum of consecutive naturals, for example, 2178593135 + ... + 2178593694.

It is an arithmetic number, because the mean of its divisors is an integer number (98036703675).

Almost surely, 2^{1220012312120} is an apocalyptic number.

1220012312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220012312120 is an abundant number, since it is smaller than the sum of its proper divisors (1917162205480).

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

1220012312120 is a wasteful number, since it uses less digits than its factorization.

1220012312120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357186847 (or 4357186843 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1220012312120 its reverse (212132100221), we get a palindrome (1432144412341).

The spelling of 1220012312120 in words is "one trillion, two hundred twenty billion, twelve million, three hundred twelve thousand, one hundred twenty".