1223104535450 has 144 divisors (see below), whose sum is σ = 2686441416120. Its totient is φ = 413021306880.

The previous prime is 1223104535413. The next prime is 1223104535459. The reversal of 1223104535450 is 545354013221.

It can be written as a sum of positive squares in 12 ways, for example, as 812877121 + 1222291658329 = 28511^2 + 1105573^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1223104535450.

It is not an unprimeable number, because it can be changed into a prime (1223104535459) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 137531204 + ... + 137540096.

Almost surely, 2^{1223104535450} is an apocalyptic number.

1223104535450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223104535450 is an abundant number, since it is smaller than the sum of its proper divisors (1463336880670).

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

1223104535450 is a wasteful number, since it uses less digits than its factorization.

1223104535450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9761 (or 9749 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 1223104535450 its reverse (545354013221), we get a palindrome (1768458548671).

The spelling of 1223104535450 in words is "one trillion, two hundred twenty-three billion, one hundred four million, five hundred thirty-five thousand, four hundred fifty".