213444210000321 has 16 divisors (see below), whose sum is σ = 317415977704320. Its totient is φ = 141755090033520.

The previous prime is 213444210000313. The next prime is 213444210000323. The reversal of 213444210000321 is 123000012444312.

213444210000321 is a `hidden beast` number, since 2 + 1 + 3 + 444 + 210 + 0 + 0 + 0 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 213444210000321 - 2³ = 213444210000313 is a prime.

It is a super-2 number, since 2×213444210000321² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (213444210000323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15029158510 + ... + 15029172711.

It is an arithmetic number, because the mean of its divisors is an integer number (19838498606520).

Almost surely, 2^{213444210000321} is an apocalyptic number.

It is an amenable number.

213444210000321 is a deficient number, since it is larger than the sum of its proper divisors (103971767703999).

213444210000321 is a wasteful number, since it uses less digits than its factorization.

213444210000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30058331493 (or 30058331487 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 213444210000321 its reverse (123000012444312), we get a palindrome (336444222444633).

The spelling of 213444210000321 in words is "two hundred thirteen trillion, four hundred forty-four billion, two hundred ten million, three hundred twenty-one", and thus it is an aban number.