21030330123238 has 8 divisors (see below), whose sum is σ = 31596622407432. Its totient is φ = 10498122654096.

The previous prime is 21030330123221. The next prime is 21030330123239. The reversal of 21030330123238 is 83232103303012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030330123239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8521202220 + ... + 8521204687.

It is an arithmetic number, because the mean of its divisors is an integer number (3949577800929).

Almost surely, 2^{21030330123238} is an apocalyptic number.

21030330123238 is a deficient number, since it is larger than the sum of its proper divisors (10566292284194).

21030330123238 is a wasteful number, since it uses less digits than its factorization.

21030330123238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17042407526.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 21030330123238 in words is "twenty-one trillion, thirty billion, three hundred thirty million, one hundred twenty-three thousand, two hundred thirty-eight".