21234013102 has 8 divisors (see below), whose sum is σ = 32711858136. Its totient is φ = 10330060392.

The previous prime is 21234013091. The next prime is 21234013169. The reversal of 21234013102 is 20131043212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21234013102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143472988 + ... + 143473135.

It is an arithmetic number, because the mean of its divisors is an integer number (4088982267).

Almost surely, 2^21234013102 is an apocalyptic number.

21234013102 is a deficient number, since it is larger than the sum of its proper divisors (11477845034).

21234013102 is a wasteful number, since it uses less digits than its factorization.

21234013102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286946162.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21234013102 its reverse (20131043212), we get a palindrome (41365056314).

The spelling of 21234013102 in words is "twenty-one billion, two hundred thirty-four million, thirteen thousand, one hundred two".