21214132112 has 20 divisors (see below), whose sum is σ = 41509338396. Its totient is φ = 10502044800.

The previous prime is 21214132109. The next prime is 21214132117. The reversal of 21214132112 is 21123141212.

It can be written as a sum of positive squares in 2 ways, for example, as 19089290896 + 2124841216 = 138164^2 + 46096^2 .

It is not an unprimeable number, because it can be changed into a prime (21214132117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6562163 + ... + 6565394.

Almost surely, 2^21214132112 is an apocalyptic number.

It is an amenable number.

21214132112 is a deficient number, since it is larger than the sum of its proper divisors (20295206284).

21214132112 is a wasteful number, since it uses less digits than its factorization.

21214132112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13127666 (or 13127660 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

Adding to 21214132112 its reverse (21123141212), we get a palindrome (42337273324).

The spelling of 21214132112 in words is "twenty-one billion, two hundred fourteen million, one hundred thirty-two thousand, one hundred twelve".