21104150213 has 8 divisors (see below), whose sum is σ = 21793068000. Its totient is φ = 20424238128.

The previous prime is 21104150191. The next prime is 21104150233. The reversal of 21104150213 is 31205140112.

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 21104150213 - 2²⁶ = 21037041349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21104150233) 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, 2246663 + ... + 2256036.

It is an arithmetic number, because the mean of its divisors is an integer number (2724133500).

Almost surely, 2^21104150213 is an apocalyptic number.

It is an amenable number.

21104150213 is a deficient number, since it is larger than the sum of its proper divisors (688917787).

21104150213 is a wasteful number, since it uses less digits than its factorization.

21104150213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502851.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 21104150213 its reverse (31205140112), we get a palindrome (52309290325).

The spelling of 21104150213 in words is "twenty-one billion, one hundred four million, one hundred fifty thousand, two hundred thirteen".