22443221042345 has 48 divisors (see below), whose sum is σ = 27792931708080. Its totient is φ = 17397810118656.

The previous prime is 22443221042287. The next prime is 22443221042383. The reversal of 22443221042345 is 54324012234422.

It can be written as a sum of positive squares in 24 ways, for example, as 16380240657001 + 6062980385344 = 4047251^2 + 2462312^2 .

It is not a de Polignac number, because 22443221042345 - 2⁸ = 22443221042089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22443221042299 and 22443221042308.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2061085661 + ... + 2061096549.

It is an arithmetic number, because the mean of its divisors is an integer number (579019410585).

Almost surely, 2^{22443221042345} is an apocalyptic number.

It is an amenable number.

22443221042345 is a deficient number, since it is larger than the sum of its proper divisors (5349710665735).

22443221042345 is a wasteful number, since it uses less digits than its factorization.

22443221042345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12174 (or 12137 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 38.

Adding to 22443221042345 its reverse (54324012234422), we get a palindrome (76767233276767).

The spelling of 22443221042345 in words is "twenty-two trillion, four hundred forty-three billion, two hundred twenty-one million, forty-two thousand, three hundred forty-five".