21342324102 has 16 divisors (see below), whose sum is σ = 46565070912. Its totient is φ = 6467370920.

The previous prime is 21342324089. The next prime is 21342324103. The reversal of 21342324102 is 20142324312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342324103) 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, 161684208 + ... + 161684339.

It is an arithmetic number, because the mean of its divisors is an integer number (2910316932).

Almost surely, 2^21342324102 is an apocalyptic number.

21342324102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21342324102 is an abundant number, since it is smaller than the sum of its proper divisors (25222746810).

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

21342324102 is a wasteful number, since it uses less digits than its factorization.

21342324102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323368563.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21342324102 its reverse (20142324312), we get a palindrome (41484648414).

The spelling of 21342324102 in words is "twenty-one billion, three hundred forty-two million, three hundred twenty-four thousand, one hundred two".