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121202130211 = 647631129683
BaseRepresentation
bin111000011100000110…
…1011011110100100011
3102120211210012011010121
41300320031123310203
53441210221131321
6131402434141111
711520334052131
oct1607015336443
9376753164117
10121202130211
1147446496368
121b5a6421797
13b577276316
145c1ac6c751
1532457b2441
hex1c3835bd23

121202130211 has 8 divisors (see below), whose sum is σ = 121412784384. Its totient is φ = 120991549320.

The previous prime is 121202130193. The next prime is 121202130221. The reversal of 121202130211 is 112031202121.

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

It is a cyclic number.

It is not a de Polignac number, because 121202130211 - 235 = 86842391843 is a prime.

It is a super-3 number, since 3×1212021302113 (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121202130221) 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 7 ways as a sum of consecutive naturals, for example, 4068376 + ... + 4098058.

It is an arithmetic number, because the mean of its divisors is an integer number (15176598048).

Almost surely, 2121202130211 is an apocalyptic number.

121202130211 is a deficient number, since it is larger than the sum of its proper divisors (210654173).

121202130211 is an equidigital number, since it uses as much as digits as its factorization.

121202130211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36641.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121202130211 its reverse (112031202121), we get a palindrome (233233332332).

The spelling of 121202130211 in words is "one hundred twenty-one billion, two hundred two million, one hundred thirty thousand, two hundred eleven".

Divisors: 1 647 6311 29683 4083217 19204901 187329413 121202130211