21212241414 has 96 divisors (see below), whose sum is σ = 54583927776. Its totient is φ = 5443200000.

The previous prime is 21212241409. The next prime is 21212241433. The reversal of 21212241414 is 41414221212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66414 + ... + 216414.

It is an arithmetic number, because the mean of its divisors is an integer number (568582581).

Almost surely, 2^21212241414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21212241414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27291963888).

21212241414 is an abundant number, since it is smaller than the sum of its proper divisors (33371686362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21212241414 is a wasteful number, since it uses less digits than its factorization.

21212241414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150070 (or 150063 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

Adding to 21212241414 its reverse (41414221212), we get a palindrome (62626462626).

The spelling of 21212241414 in words is "twenty-one billion, two hundred twelve million, two hundred forty-one thousand, four hundred fourteen".