22115345145 has 16 divisors (see below), whose sum is σ = 35589091392. Its totient is φ = 11726671040.

The previous prime is 22115345141. The next prime is 22115345207. The reversal of 22115345145 is 54154351122.

It is not a de Polignac number, because 22115345145 - 2² = 22115345141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22115345141) 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, 4258551 + ... + 4263740.

It is an arithmetic number, because the mean of its divisors is an integer number (2224318212).

Almost surely, 2^22115345145 is an apocalyptic number.

It is an amenable number.

22115345145 is a deficient number, since it is larger than the sum of its proper divisors (13473746247).

22115345145 is a wasteful number, since it uses less digits than its factorization.

22115345145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8522472.

The product of its digits is 24000, while the sum is 33.

Adding to 22115345145 its reverse (54154351122), we get a palindrome (76269696267).

The spelling of 22115345145 in words is "twenty-two billion, one hundred fifteen million, three hundred forty-five thousand, one hundred forty-five".