21234110203 has 8 divisors (see below), whose sum is σ = 21333454848. Its totient is φ = 21134994984.

The previous prime is 21234110159. The next prime is 21234110221. The reversal of 21234110203 is 30201143212.

It is a happy number.

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 21234110203 - 2¹³ = 21234102011 is a prime.

It is a super-2 number, since 2×21234110203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21234110263) 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, 129600 + ... + 243442.

It is an arithmetic number, because the mean of its divisors is an integer number (2666681856).

Almost surely, 2^21234110203 is an apocalyptic number.

21234110203 is a deficient number, since it is larger than the sum of its proper divisors (99344645).

21234110203 is a wasteful number, since it uses less digits than its factorization.

21234110203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114713.

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

Adding to 21234110203 its reverse (30201143212), we get a palindrome (51435253415).

The spelling of 21234110203 in words is "twenty-one billion, two hundred thirty-four million, one hundred ten thousand, two hundred three".