1234456545222 has 80 divisors (see below), whose sum is σ = 2801875728960. Its totient is φ = 406165923072.

The previous prime is 1234456545211. The next prime is 1234456545247. The reversal of 1234456545222 is 2225456544321.

1234456545222 is a `hidden beast` number, since 1 + 2 + 3 + 44 + 565 + 45 + 2 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 56261838 + ... + 56283774.

It is an arithmetic number, because the mean of its divisors is an integer number (35023446612).

Almost surely, 2^{1234456545222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234456545222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1400937864480).

1234456545222 is an abundant number, since it is smaller than the sum of its proper divisors (1567419183738).

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

1234456545222 is a wasteful number, since it uses less digits than its factorization.

1234456545222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26427 (or 26418 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 45.

Subtracting 1234456545222 from its reverse (2225456544321), we obtain a palindrome (990999999099).

The spelling of 1234456545222 in words is "one trillion, two hundred thirty-four billion, four hundred fifty-six million, five hundred forty-five thousand, two hundred twenty-two".