21100133330 has 8 divisors (see below), whose sum is σ = 37980240012. Its totient is φ = 8440053328.

The previous prime is 21100133303. The next prime is 21100133333. The reversal of 21100133330 is 3333100112.

It can be written as a sum of positive squares in 2 ways, for example, as 20140434889 + 959698441 = 141917^2 + 30979^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21100133299 and 21100133308.

It is not an unprimeable number, because it can be changed into a prime (21100133333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055006657 + ... + 1055006676.

Almost surely, 2^21100133330 is an apocalyptic number.

21100133330 is a deficient number, since it is larger than the sum of its proper divisors (16880106682).

21100133330 is a wasteful number, since it uses less digits than its factorization.

21100133330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110013340.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21100133330 its reverse (3333100112), we get a palindrome (24433233442).

The spelling of 21100133330 in words is "twenty-one billion, one hundred million, one hundred thirty-three thousand, three hundred thirty".