1222542544452 has 24 divisors (see below), whose sum is σ = 2918938789536. Its totient is φ = 398037107328.

The previous prime is 1222542544451. The next prime is 1222542544537. The reversal of 1222542544452 is 2544452452221.

It is a super-2 number, since 2×1222542544452² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222542544451) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1184633733 + ... + 1184634764.

It is an arithmetic number, because the mean of its divisors is an integer number (121622449564).

Almost surely, 2^{1222542544452} is an apocalyptic number.

1222542544452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222542544452 is an abundant number, since it is smaller than the sum of its proper divisors (1696396245084).

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

1222542544452 is a wasteful number, since it uses less digits than its factorization.

1222542544452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369268547 (or 2369268545 counting only the distinct ones).

The product of its digits is 1024000, while the sum is 42.

Adding to 1222542544452 its reverse (2544452452221), we get a palindrome (3766994996673).

The spelling of 1222542544452 in words is "one trillion, two hundred twenty-two billion, five hundred forty-two million, five hundred forty-four thousand, four hundred fifty-two".