1223534554120 has 64 divisors (see below), whose sum is σ = 2899237276800. Its totient is φ = 463432435200.

The previous prime is 1223534554111. The next prime is 1223534554129. The reversal of 1223534554120 is 214554353221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1223534554111) and next prime (1223534554129).

It is a self number, because there is not a number n which added to its sum of digits gives 1223534554120.

It is not an unprimeable number, because it can be changed into a prime (1223534554129) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1200420 + ... + 1971820.

It is an arithmetic number, because the mean of its divisors is an integer number (45300582450).

Almost surely, 2^{1223534554120} is an apocalyptic number.

1223534554120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223534554120 is an abundant number, since it is smaller than the sum of its proper divisors (1675702722680).

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

1223534554120 is a wasteful number, since it uses less digits than its factorization.

1223534554120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773518 (or 773514 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 1223534554120 in words is "one trillion, two hundred twenty-three billion, five hundred thirty-four million, five hundred fifty-four thousand, one hundred twenty".