21330130210 has 8 divisors (see below), whose sum is σ = 38394234396. Its totient is φ = 8532052080.

The previous prime is 21330130201. The next prime is 21330130219. The reversal of 21330130210 is 1203103312.

It is an interprime number because it is at equal distance from previous prime (21330130201) and next prime (21330130219).

It can be written as a sum of positive squares in 2 ways, for example, as 20610334969 + 719795241 = 143563^2 + 26829^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21330130219) 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, 1066506501 + ... + 1066506520.

Almost surely, 2^21330130210 is an apocalyptic number.

21330130210 is a deficient number, since it is larger than the sum of its proper divisors (17064104186).

21330130210 is a wasteful number, since it uses less digits than its factorization.

21330130210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133013028.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21330130210 its reverse (1203103312), we get a palindrome (22533233522).

The spelling of 21330130210 in words is "twenty-one billion, three hundred thirty million, one hundred thirty thousand, two hundred ten".