21334121140 has 24 divisors (see below), whose sum is σ = 44804454912. Its totient is φ = 8533115040.

The previous prime is 21334121113. The next prime is 21334121143. The reversal of 21334121140 is 4112143312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334121143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512925 + ... + 552955.

It is an arithmetic number, because the mean of its divisors is an integer number (1866852288).

Almost surely, 2^21334121140 is an apocalyptic number.

21334121140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21334121140 is an abundant number, since it is smaller than the sum of its proper divisors (23470333772).

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

21334121140 is a wasteful number, since it uses less digits than its factorization.

21334121140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66687 (or 66685 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21334121140 its reverse (4112143312), we get a palindrome (25446264452).

The spelling of 21334121140 in words is "twenty-one billion, three hundred thirty-four million, one hundred twenty-one thousand, one hundred forty".