21343221310 has 16 divisors (see below), whose sum is σ = 39657082752. Its totient is φ = 8261892000.

The previous prime is 21343221301. The next prime is 21343221311. The reversal of 21343221310 is 1312234312.

It is a super-2 number, since 2×21343221310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343221311) 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, 34424241 + ... + 34424860.

It is an arithmetic number, because the mean of its divisors is an integer number (2478567672).

Almost surely, 2^21343221310 is an apocalyptic number.

21343221310 is a deficient number, since it is larger than the sum of its proper divisors (18313861442).

21343221310 is a wasteful number, since it uses less digits than its factorization.

21343221310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68849139.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21343221310 its reverse (1312234312), we get a palindrome (22655455622).

The spelling of 21343221310 in words is "twenty-one billion, three hundred forty-three million, two hundred twenty-one thousand, three hundred ten".