21212000414 has 16 divisors (see below), whose sum is σ = 34713327600. Its totient is φ = 9641045760.

The previous prime is 21212000351. The next prime is 21212000423. The reversal of 21212000414 is 41400021212.

It is a junction number, because it is equal to n+sod(n) for n = 21212000392 and 21212000401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313472 + ... + 375084.

It is an arithmetic number, because the mean of its divisors is an integer number (2169582975).

Almost surely, 2^21212000414 is an apocalyptic number.

21212000414 is a deficient number, since it is larger than the sum of its proper divisors (13501327186).

21212000414 is a wasteful number, since it uses less digits than its factorization.

21212000414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77275.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21212000414 its reverse (41400021212), we get a palindrome (62612021626).

The spelling of 21212000414 in words is "twenty-one billion, two hundred twelve million, four hundred fourteen", and thus it is an aban number.