1220554351250 has 80 divisors (see below), whose sum is σ = 2464437877440. Its totient is φ = 450548136000.

The previous prime is 1220554351189. The next prime is 1220554351363. The reversal of 1220554351250 is 521534550221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220554351250.

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 39 ways as a sum of consecutive naturals, for example, 84151499 + ... + 84166001.

It is an arithmetic number, because the mean of its divisors is an integer number (30805473468).

Almost surely, 2^{1220554351250} is an apocalyptic number.

1220554351250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220554351250 is an abundant number, since it is smaller than the sum of its proper divisors (1243883526190).

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

1220554351250 is a wasteful number, since it uses less digits than its factorization.

1220554351250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19717 (or 19702 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 1220554351250 in words is "one trillion, two hundred twenty billion, five hundred fifty-four million, three hundred fifty-one thousand, two hundred fifty".