22066442512145 has 8 divisors (see below), whose sum is σ = 26479876574760. Its totient is φ = 17653056969600.

The previous prime is 22066442512141. The next prime is 22066442512187. The reversal of 22066442512145 is 54121524466022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7847079997696 + 14219362514449 = 2801264^2 + 3770857^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22066442512145 - 2² = 22066442512141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22066442512096 and 22066442512105.

It is not an unprimeable number, because it can be changed into a prime (22066442512141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11121860 + ... + 12954869.

It is an arithmetic number, because the mean of its divisors is an integer number (3309984571845).

Almost surely, 2^{22066442512145} is an apocalyptic number.

It is an amenable number.

22066442512145 is a deficient number, since it is larger than the sum of its proper divisors (4413434062615).

22066442512145 is a wasteful number, since it uses less digits than its factorization.

22066442512145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24260035.

The product of its (nonzero) digits is 921600, while the sum is 44.

Adding to 22066442512145 its reverse (54121524466022), we get a palindrome (76187966978167).

The spelling of 22066442512145 in words is "twenty-two trillion, sixty-six billion, four hundred forty-two million, five hundred twelve thousand, one hundred forty-five".