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BaseRepresentation
bin1001101001011001011011…
…10100111011011011111100
32210010000001010011100112201
410310230231310323123330
510240030434223341404
6113041222102041244
74316430042412330
oct464545564733374
983100033140481
1021213612324604
116839708135077
12246740ba19224
13bab586a9298b
14534a5c5857c0
1526bc34b27ca4
hex134b2dd3b6fc

21213612324604 has 48 divisors (see below), whose sum is σ = 42823314293760. Its totient is φ = 9006698473920.

The previous prime is 21213612324601. The next prime is 21213612324613. The reversal of 21213612324604 is 40642321631212.

Adding to 21213612324604 its reverse (40642321631212), we get a palindrome (61855933955816).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213612324601) 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, 18635139 + ... + 19740709.

It is an arithmetic number, because the mean of its divisors is an integer number (892152381120).

Almost surely, 221213612324604 is an apocalyptic number.

It is an amenable number.

21213612324604 is an abundant number, since it is smaller than the sum of its proper divisors (21609701969156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21213612324604 is a wasteful number, since it uses less digits than its factorization.

21213612324604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111978 (or 1111976 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 21213612324604 in words is "twenty-one trillion, two hundred thirteen billion, six hundred twelve million, three hundred twenty-four thousand, six hundred four".