22512168466 has 4 divisors (see below), whose sum is σ = 33768252702. Its totient is φ = 11256084232.

The previous prime is 22512168461. The next prime is 22512168479. The reversal of 22512168466 is 66486121522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19174217841 + 3337950625 = 138471^2 + 57775^2 .

It is not an unprimeable number, because it can be changed into a prime (22512168461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5628042115 + ... + 5628042118.

Almost surely, 2^22512168466 is an apocalyptic number.

22512168466 is a deficient number, since it is larger than the sum of its proper divisors (11256084236).

22512168466 is a wasteful number, since it uses less digits than its factorization.

22512168466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11256084235.

The product of its digits is 276480, while the sum is 43.

Adding to 22512168466 its reverse (66486121522), we get a palindrome (88998289988).

The spelling of 22512168466 in words is "twenty-two billion, five hundred twelve million, one hundred sixty-eight thousand, four hundred sixty-six".