1220554051320 has 64 divisors (see below), whose sum is σ = 3661992000000. Its totient is φ = 325451760768.

The previous prime is 1220554051313. The next prime is 1220554051333. The reversal of 1220554051320 is 231504550221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 896181 + ... + 1801179.

It is an arithmetic number, because the mean of its divisors is an integer number (57218625000).

Almost surely, 2^{1220554051320} is an apocalyptic number.

1220554051320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220554051320 is an abundant number, since it is smaller than the sum of its proper divisors (2441437948680).

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

1220554051320 is a wasteful number, since it uses less digits than its factorization.

1220554051320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916252 (or 916248 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 1220554051320 in words is "one trillion, two hundred twenty billion, five hundred fifty-four million, fifty-one thousand, three hundred twenty".