21342102104 has 16 divisors (see below), whose sum is σ = 40023193200. Its totient is φ = 10669250592.

The previous prime is 21342102091. The next prime is 21342102161. The reversal of 21342102104 is 40120124312.

It is a super-2 number, since 2×21342102104² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173999 + ... + 270110.

It is an arithmetic number, because the mean of its divisors is an integer number (2501449575).

Almost surely, 2^21342102104 is an apocalyptic number.

It is an amenable number.

21342102104 is a deficient number, since it is larger than the sum of its proper divisors (18681091096).

21342102104 is a wasteful number, since it uses less digits than its factorization.

21342102104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450122 (or 450118 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21342102104 its reverse (40120124312), we get a palindrome (61462226416).

The spelling of 21342102104 in words is "twenty-one billion, three hundred forty-two million, one hundred two thousand, one hundred four".