21434302110 has 96 divisors (see below), whose sum is σ = 55759619808. Its totient is φ = 5270853120.

The previous prime is 21434302103. The next prime is 21434302111. The reversal of 21434302110 is 1120343412.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434302111) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 8176600 + ... + 8179220.

It is an arithmetic number, because the mean of its divisors is an integer number (580829373).

Almost surely, 2^21434302110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21434302110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27879809904).

21434302110 is an abundant number, since it is smaller than the sum of its proper divisors (34325317698).

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

21434302110 is a wasteful number, since it uses less digits than its factorization.

21434302110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270 (or 4257 counting only the distinct ones).

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

Adding to 21434302110 its reverse (1120343412), we get a palindrome (22554645522).

The spelling of 21434302110 in words is "twenty-one billion, four hundred thirty-four million, three hundred two thousand, one hundred ten".