21323120214 has 48 divisors (see below), whose sum is σ = 47134891440. Its totient is φ = 6425812800.

The previous prime is 21323120183. The next prime is 21323120237. The reversal of 21323120214 is 41202132312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50272 + ... + 212540.

It is an arithmetic number, because the mean of its divisors is an integer number (981976905).

Almost surely, 2^21323120214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21323120214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23567445720).

21323120214 is an abundant number, since it is smaller than the sum of its proper divisors (25811771226).

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

21323120214 is a wasteful number, since it uses less digits than its factorization.

21323120214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162477 (or 162466 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21323120214 its reverse (41202132312), we get a palindrome (62525252526).

The spelling of 21323120214 in words is "twenty-one billion, three hundred twenty-three million, one hundred twenty thousand, two hundred fourteen".