21434232103 has 8 divisors (see below), whose sum is σ = 21738640896. Its totient is φ = 21129893400.

The previous prime is 21434232067. The next prime is 21434232121. The reversal of 21434232103 is 30123243412.

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

It is a cyclic number.

It is not a de Polignac number, because 21434232103 - 2¹³ = 21434223911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434232503) 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, 1091550 + ... + 1111012.

It is an arithmetic number, because the mean of its divisors is an integer number (2717330112).

Almost surely, 2^21434232103 is an apocalyptic number.

21434232103 is a deficient number, since it is larger than the sum of its proper divisors (304408793).

21434232103 is a wasteful number, since it uses less digits than its factorization.

21434232103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35045.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21434232103 its reverse (30123243412), we get a palindrome (51557475515).

The spelling of 21434232103 in words is "twenty-one billion, four hundred thirty-four million, two hundred thirty-two thousand, one hundred three".