21241214212 has 6 divisors (see below), whose sum is σ = 37172124878. Its totient is φ = 10620607104.

The previous prime is 21241214171. The next prime is 21241214233.

21241214212 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 14307987456 + 6933226756 = 119616^2 + 83266^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2655151773 + ... + 2655151780.

Almost surely, 2^21241214212 is an apocalyptic number.

It is an amenable number.

21241214212 is a deficient number, since it is larger than the sum of its proper divisors (15930910666).

21241214212 is a wasteful number, since it uses less digits than its factorization.

21241214212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5310303557 (or 5310303555 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The spelling of 21241214212 in words is "twenty-one billion, two hundred forty-one million, two hundred fourteen thousand, two hundred twelve".