21232103133 has 16 divisors (see below), whose sum is σ = 28687841600. Its totient is φ = 13966629120.

The previous prime is 21232103119. The next prime is 21232103149. The reversal of 21232103133 is 33130123212.

It is not a de Polignac number, because 21232103133 - 2⁸ = 21232102877 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 (21232103933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55903 + ... + 213516.

It is an arithmetic number, because the mean of its divisors is an integer number (1792990100).

Almost surely, 2^21232103133 is an apocalyptic number.

It is an amenable number.

21232103133 is a deficient number, since it is larger than the sum of its proper divisors (7455738467).

21232103133 is a wasteful number, since it uses less digits than its factorization.

21232103133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269772.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21232103133 its reverse (33130123212), we get a palindrome (54362226345).

The spelling of 21232103133 in words is "twenty-one billion, two hundred thirty-two million, one hundred three thousand, one hundred thirty-three".