21103101333 has 6 divisors (see below), whose sum is σ = 30482257494. Its totient is φ = 14068734216.

The previous prime is 21103101269. The next prime is 21103101361. The reversal of 21103101333 is 33310130112.

It is a happy number.

21103101333 is a `hidden beast` number, since 21 + 1 + 0 + 310 + 1 + 333 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16960634289 + 4142467044 = 130233^2 + 64362^2 .

It is not a de Polignac number, because 21103101333 - 2⁶ = 21103101269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103108333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172394510 + ... + 1172394527.

It is an arithmetic number, because the mean of its divisors is an integer number (5080376249).

Almost surely, 2^21103101333 is an apocalyptic number.

It is an amenable number.

21103101333 is a deficient number, since it is larger than the sum of its proper divisors (9379156161).

21103101333 is a wasteful number, since it uses less digits than its factorization.

21103101333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344789043 (or 2344789040 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21103101333 its reverse (33310130112), we get a palindrome (54413231445).

The spelling of 21103101333 in words is "twenty-one billion, one hundred three million, one hundred one thousand, three hundred thirty-three".