21203234410133 has 8 divisors (see below), whose sum is σ = 22452532652952. Its totient is φ = 19954163851776.

The previous prime is 21203234410121. The next prime is 21203234410159. The reversal of 21203234410133 is 33101443230212.

It can be written as a sum of positive squares in 4 ways, for example, as 1432921520209 + 19770312889924 = 1197047^2 + 4446382^2 .

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 21203234410133 - 2⁴ = 21203234410117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21203234410096 and 21203234410105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203234412133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 56729360 + ... + 57101897.

It is an arithmetic number, because the mean of its divisors is an integer number (2806566581619).

Almost surely, 2^{21203234410133} is an apocalyptic number.

It is an amenable number.

21203234410133 is a deficient number, since it is larger than the sum of its proper divisors (1249298242819).

21203234410133 is a wasteful number, since it uses less digits than its factorization.

21203234410133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113842231.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 21203234410133 its reverse (33101443230212), we get a palindrome (54304677640345).

The spelling of 21203234410133 in words is "twenty-one trillion, two hundred three billion, two hundred thirty-four million, four hundred ten thousand, one hundred thirty-three".