21434500203 has 8 divisors (see below), whose sum is σ = 28761368208. Its totient is φ = 14198649504.

The previous prime is 21434500181. The next prime is 21434500231. The reversal of 21434500203 is 30200543412.

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

It is not a de Polignac number, because 21434500203 - 2¹⁰ = 21434499179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21434500273) 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, 22753776 + ... + 22754717.

It is an arithmetic number, because the mean of its divisors is an integer number (3595171026).

Almost surely, 2^21434500203 is an apocalyptic number.

21434500203 is a deficient number, since it is larger than the sum of its proper divisors (7326868005).

21434500203 is a wasteful number, since it uses less digits than its factorization.

21434500203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45508653.

The product of its (nonzero) digits is 2880, while the sum is 24.

The spelling of 21434500203 in words is "twenty-one billion, four hundred thirty-four million, five hundred thousand, two hundred three".