21212412410 has 16 divisors (see below), whose sum is σ = 43636962816. Its totient is φ = 7272827088.

The previous prime is 21212412409. The next prime is 21212412427. The reversal of 21212412410 is 1421421212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151517162 + ... + 151517301.

It is an arithmetic number, because the mean of its divisors is an integer number (2727310176).

Almost surely, 2^21212412410 is an apocalyptic number.

21212412410 is an abundant number, since it is smaller than the sum of its proper divisors (22424550406).

21212412410 is a wasteful number, since it uses less digits than its factorization.

21212412410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303034477.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21212412410 its reverse (1421421212), we get a palindrome (22633833622).

The spelling of 21212412410 in words is "twenty-one billion, two hundred twelve million, four hundred twelve thousand, four hundred ten".