1220554455412 has 24 divisors (see below), whose sum is σ = 2138795668800. Its totient is φ = 609470514240.

The previous prime is 1220554455397. The next prime is 1220554455427. The reversal of 1220554455412 is 2145544550221.

It is an interprime number because it is at equal distance from previous prime (1220554455397) and next prime (1220554455427).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9263112 + ... + 9393952.

It is an arithmetic number, because the mean of its divisors is an integer number (89116486200).

Almost surely, 2^{1220554455412} is an apocalyptic number.

It is an amenable number.

1220554455412 is a deficient number, since it is larger than the sum of its proper divisors (918241213388).

1220554455412 is a wasteful number, since it uses less digits than its factorization.

1220554455412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133911 (or 133909 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 40.

The spelling of 1220554455412 in words is "one trillion, two hundred twenty billion, five hundred fifty-four million, four hundred fifty-five thousand, four hundred twelve".