21343312321102 has 16 divisors (see below), whose sum is σ = 33079763533824. Its totient is φ = 10317392271000.

The previous prime is 21343312321031. The next prime is 21343312321109. The reversal of 21343312321102 is 20112321334312.

It is a super-2 number, since 2×21343312321102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343312321109) 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, 166884174 + ... + 167012017.

It is an arithmetic number, because the mean of its divisors is an integer number (2067485220864).

Almost surely, 2^{21343312321102} is an apocalyptic number.

21343312321102 is a deficient number, since it is larger than the sum of its proper divisors (11736451212722).

21343312321102 is a wasteful number, since it uses less digits than its factorization.

21343312321102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333897255.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 21343312321102 its reverse (20112321334312), we get a palindrome (41455633655414).

The spelling of 21343312321102 in words is "twenty-one trillion, three hundred forty-three billion, three hundred twelve million, three hundred twenty-one thousand, one hundred two".