21400301212 has 6 divisors (see below), whose sum is σ = 37450527128. Its totient is φ = 10700150604.

The previous prime is 21400301183. The next prime is 21400301249. The reversal of 21400301212 is 21210300412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2675037648 + ... + 2675037655.

Almost surely, 2^21400301212 is an apocalyptic number.

It is an amenable number.

21400301212 is a deficient number, since it is larger than the sum of its proper divisors (16050225916).

21400301212 is a wasteful number, since it uses less digits than its factorization.

21400301212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5350075307 (or 5350075305 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21400301212 its reverse (21210300412), we get a palindrome (42610601624).

The spelling of 21400301212 in words is "twenty-one billion, four hundred million, three hundred one thousand, two hundred twelve".