22215131525530 has 64 divisors (see below), whose sum is σ = 42118984309248. Its totient is φ = 8427847034880.

The previous prime is 22215131525519. The next prime is 22215131525539. The reversal of 22215131525530 is 3552513151222.

It is a self number, because there is not a number n which added to its sum of digits gives 22215131525530.

It is not an unprimeable number, because it can be changed into a prime (22215131525539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2813986 + ... + 7235245.

It is an arithmetic number, because the mean of its divisors is an integer number (658109129832).

Almost surely, 2^{22215131525530} is an apocalyptic number.

22215131525530 is a deficient number, since it is larger than the sum of its proper divisors (19903852783718).

22215131525530 is a wasteful number, since it uses less digits than its factorization.

22215131525530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10049431.

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 22215131525530 its reverse (3552513151222), we get a palindrome (25767644676752).

The spelling of 22215131525530 in words is "twenty-two trillion, two hundred fifteen billion, one hundred thirty-one million, five hundred twenty-five thousand, five hundred thirty".