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211041313021 = 71131367324071
BaseRepresentation
bin1100010010001100001…
…0101110000011111101
3202011201211110111112201
43010203002232003331
511424203034004041
6240541231431501
721150541363660
oct3044302560375
9664654414481
10211041313021
1181558357090
1234a99385591
1316b9397cba6
14a3006676d7
155752974631
hex31230ae0fd

211041313021 has 32 divisors (see below), whose sum is σ = 271689302016. Its totient is φ = 159093072000.

The previous prime is 211041313001. The next prime is 211041313057. The reversal of 211041313021 is 120313140112.

It is a cyclic number.

It is not a de Polignac number, because 211041313021 - 215 = 211041280253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211041313021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211041313001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8755416 + ... + 8779486.

It is an arithmetic number, because the mean of its divisors is an integer number (8490290688).

Almost surely, 2211041313021 is an apocalyptic number.

It is an amenable number.

211041313021 is a deficient number, since it is larger than the sum of its proper divisors (60647988995).

211041313021 is a wasteful number, since it uses less digits than its factorization.

211041313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27793.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211041313021 its reverse (120313140112), we get a palindrome (331354453133).

The spelling of 211041313021 in words is "two hundred eleven billion, forty-one million, three hundred thirteen thousand, twenty-one".

Divisors: 1 7 11 31 77 217 341 2387 3673 24071 25711 40403 113863 168497 264781 282821 746201 797041 1252493 1853467 5223407 8208211 8767451 57457477 88412783 618889481 972540613 2740796273 6807784291 19185573911 30148759003 211041313021