1220554351323 has 12 divisors (see below), whose sum is σ = 1763041475520. Its totient is φ = 813694351536.

The previous prime is 1220554351189. The next prime is 1220554351363. The reversal of 1220554351323 is 3231534550221.

1220554351323 is a `hidden beast` number, since 1 + 2 + 20 + 554 + 3 + 51 + 32 + 3 = 666.

It is not a de Polignac number, because 1220554351323 - 2¹⁰ = 1220554350299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220554351363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261865 + ... + 1584197.

It is an arithmetic number, because the mean of its divisors is an integer number (146920122960).

Almost surely, 2^{1220554351323} is an apocalyptic number.

1220554351323 is a deficient number, since it is larger than the sum of its proper divisors (542487124197).

1220554351323 is a wasteful number, since it uses less digits than its factorization.

1220554351323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424898 (or 1424895 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 1220554351323 in words is "one trillion, two hundred twenty billion, five hundred fifty-four million, three hundred fifty-one thousand, three hundred twenty-three".