21343240102 has 16 divisors (see below), whose sum is σ = 32581186992. Its totient is φ = 10483290720.

The previous prime is 21343240097. The next prime is 21343240123. The reversal of 21343240102 is 20104234312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15133 + ... + 207160.

It is an arithmetic number, because the mean of its divisors is an integer number (2036324187).

Almost surely, 2^21343240102 is an apocalyptic number.

21343240102 is a deficient number, since it is larger than the sum of its proper divisors (11237946890).

21343240102 is a wasteful number, since it uses less digits than its factorization.

21343240102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223143.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21343240102 its reverse (20104234312), we get a palindrome (41447474414).

The spelling of 21343240102 in words is "twenty-one billion, three hundred forty-three million, two hundred forty thousand, one hundred two".