21301034212 has 6 divisors (see below), whose sum is σ = 37276809878. Its totient is φ = 10650517104.

The previous prime is 21301034203. The next prime is 21301034243. The reversal of 21301034212 is 21243010312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15621000256 + 5680033956 = 124984^2 + 75366^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21301034212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2662629273 + ... + 2662629280.

Almost surely, 2^21301034212 is an apocalyptic number.

It is an amenable number.

21301034212 is a deficient number, since it is larger than the sum of its proper divisors (15975775666).

21301034212 is a wasteful number, since it uses less digits than its factorization.

21301034212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325258557 (or 5325258555 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21301034212 its reverse (21243010312), we get a palindrome (42544044524).

The spelling of 21301034212 in words is "twenty-one billion, three hundred one million, thirty-four thousand, two hundred twelve".