21343203310 has 96 divisors (see below), whose sum is σ = 47870232480. Its totient is φ = 6786996480.

The previous prime is 21343203307. The next prime is 21343203311. The reversal of 21343203310 is 1330234312.

It is a super-2 number, since 2×21343203310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343203311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 263164 + ... + 334576.

It is an arithmetic number, because the mean of its divisors is an integer number (498648255).

Almost surely, 2^21343203310 is an apocalyptic number.

21343203310 is an abundant number, since it is smaller than the sum of its proper divisors (26527029170).

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

21343203310 is a wasteful number, since it uses less digits than its factorization.

21343203310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71474 (or 71463 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21343203310 its reverse (1330234312), we get a palindrome (22673437622).

The spelling of 21343203310 in words is "twenty-one billion, three hundred forty-three million, two hundred three thousand, three hundred ten".