1224342440445 has 16 divisors (see below), whose sum is σ = 1959322089600. Its totient is φ = 652857906624.

The previous prime is 1224342440441. The next prime is 1224342440459. The reversal of 1224342440445 is 5440442434221.

It is not a de Polignac number, because 1224342440445 - 2² = 1224342440441 is a prime.

It is a super-2 number, since 2×1224342440445² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224342440441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7714345 + ... + 7871454.

It is an arithmetic number, because the mean of its divisors is an integer number (122457630600).

Almost surely, 2^{1224342440445} is an apocalyptic number.

1224342440445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1224342440445 is a deficient number, since it is larger than the sum of its proper divisors (734979649155).

1224342440445 is a wasteful number, since it uses less digits than its factorization.

1224342440445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15591044.

The product of its (nonzero) digits is 491520, while the sum is 39.

Adding to 1224342440445 its reverse (5440442434221), we get a palindrome (6664784874666).

The spelling of 1224342440445 in words is "one trillion, two hundred twenty-four billion, three hundred forty-two million, four hundred forty thousand, four hundred forty-five".