21342203102 has 128 divisors (see below), whose sum is σ = 38838942720. Its totient is φ = 8692992000.

The previous prime is 21342203089. The next prime is 21342203117. The reversal of 21342203102 is 20130224312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101147777 + ... + 101147987.

It is an arithmetic number, because the mean of its divisors is an integer number (303429240).

Almost surely, 2^21342203102 is an apocalyptic number.

21342203102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21342203102 is a deficient number, since it is larger than the sum of its proper divisors (17496739618).

21342203102 is a wasteful number, since it uses less digits than its factorization.

21342203102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21342203102 its reverse (20130224312), we get a palindrome (41472427414).

The spelling of 21342203102 in words is "twenty-one billion, three hundred forty-two million, two hundred three thousand, one hundred two".