21344131110 has 32 divisors (see below), whose sum is σ = 51230154240. Its totient is φ = 5691297248.

The previous prime is 21344131097. The next prime is 21344131111. The reversal of 21344131110 is 1113144312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344131111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488419 + ... + 530321.

It is an arithmetic number, because the mean of its divisors is an integer number (1600942320).

Almost surely, 2^21344131110 is an apocalyptic number.

21344131110 is an abundant number, since it is smaller than the sum of its proper divisors (29886023130).

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

21344131110 is a wasteful number, since it uses less digits than its factorization.

21344131110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58892.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21344131110 its reverse (1113144312), we get a palindrome (22457275422).

The spelling of 21344131110 in words is "twenty-one billion, three hundred forty-four million, one hundred thirty-one thousand, one hundred ten".