21414434212 has 6 divisors (see below), whose sum is σ = 37475259878. Its totient is φ = 10707217104.

The previous prime is 21414434203. The next prime is 21414434233. The reversal of 21414434212 is 21243441412.

It can be written as a sum of positive squares in only one way, i.e., 17701238116 + 3713196096 = 133046^2 + 60936^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2676804273 + ... + 2676804280.

Almost surely, 2^21414434212 is an apocalyptic number.

It is an amenable number.

21414434212 is a deficient number, since it is larger than the sum of its proper divisors (16060825666).

21414434212 is a wasteful number, since it uses less digits than its factorization.

21414434212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353608557 (or 5353608555 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

Adding to 21414434212 its reverse (21243441412), we get a palindrome (42657875624).

The spelling of 21414434212 in words is "twenty-one billion, four hundred fourteen million, four hundred thirty-four thousand, two hundred twelve".