21232117466 has 16 divisors (see below), whose sum is σ = 37980434304. Its totient is φ = 8703849264.

The previous prime is 21232117463. The next prime is 21232117477. The reversal of 21232117466 is 66471123212.

It is a super-2 number, since 2×21232117466² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21232117463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32968805 + ... + 32969448.

It is an arithmetic number, because the mean of its divisors is an integer number (2373777144).

Almost surely, 2^21232117466 is an apocalyptic number.

21232117466 is a deficient number, since it is larger than the sum of its proper divisors (16748316838).

21232117466 is a wasteful number, since it uses less digits than its factorization.

21232117466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65938285.

The product of its digits is 24192, while the sum is 35.

The spelling of 21232117466 in words is "twenty-one billion, two hundred thirty-two million, one hundred seventeen thousand, four hundred sixty-six".