12213441430545 has 32 divisors (see below), whose sum is σ = 19728264811392. Its totient is φ = 6451608069632.

The previous prime is 12213441430493. The next prime is 12213441430573. The reversal of 12213441430545 is 54503414431221.

It is a cyclic number.

It is not a de Polignac number, because 12213441430545 - 2¹² = 12213441426449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6898939 + ... + 8486591.

It is an arithmetic number, because the mean of its divisors is an integer number (616508275356).

Almost surely, 2^{12213441430545} is an apocalyptic number.

12213441430545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12213441430545 is a deficient number, since it is larger than the sum of its proper divisors (7514823380847).

12213441430545 is a wasteful number, since it uses less digits than its factorization.

12213441430545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592561.

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 12213441430545 its reverse (54503414431221), we get a palindrome (66716855861766).

The spelling of 12213441430545 in words is "twelve trillion, two hundred thirteen billion, four hundred forty-one million, four hundred thirty thousand, five hundred forty-five".