Search a number
-
+
2121130223100 = 22325272116341357
BaseRepresentation
bin11110110111011101001…
…101101010010111111100
321111210000012201202002100
4132313131031222113330
5234223033314114400
64302233410025100
7306150404261400
oct36673515522774
97453005652070
102121130223100
11748625793289
122a310a278190
13125038951ab5
147493dd61100
153a2972d9100
hex1eddd36a5fc

2121130223100 has 324 divisors, whose sum is σ = 7740882067464. Its totient is φ = 484401173760.

The previous prime is 2121130223089. The next prime is 2121130223237. The reversal of 2121130223100 is 13220311212.

2121130223100 is a `hidden beast` number, since 212 + 1 + 130 + 223 + 100 = 666.

It is a super-2 number, since 2×21211302231002 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 51267622 + ... + 51308978.

Almost surely, 22121130223100 is an apocalyptic number.

2121130223100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121130223100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3870441033732).

2121130223100 is an abundant number, since it is smaller than the sum of its proper divisors (5619751844364).

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

2121130223100 is a wasteful number, since it uses less digits than its factorization.

2121130223100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42554 (or 42537 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2121130223100 its reverse (13220311212), we get a palindrome (2134350534312).

The spelling of 2121130223100 in words is "two trillion, one hundred twenty-one billion, one hundred thirty million, two hundred twenty-three thousand, one hundred".