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202011211208 = 23173487742589
BaseRepresentation
bin1011110000100011001…
…1100111010111001000
3201022102111201210121102
42330020303213113020
511302204332224313
6232445213200532
720411011651352
oct2741063472710
9638374653542
10202011211208
1178744075a24
1233199190148
1316084bc0491
149ac52580d2
1553c4ceda58
hex2f08ce75c8

202011211208 has 32 divisors (see below), whose sum is σ = 401072585400. Its totient is φ = 95059141632.

The previous prime is 202011211201. The next prime is 202011211223. The reversal of 202011211208 is 802112110202.

202011211208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 183065891044 + 18945320164 = 427862^2 + 137642^2 .

It is a super-3 number, since 3×2020112112083 (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202011211208.

It is not an unprimeable number, because it can be changed into a prime (202011211201) 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, 4721978 + ... + 4764566.

Almost surely, 2202011211208 is an apocalyptic number.

It is an amenable number.

202011211208 is a deficient number, since it is larger than the sum of its proper divisors (199061374192).

202011211208 is a wasteful number, since it uses less digits than its factorization.

202011211208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77489 (or 77485 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 202011211208 in words is "two hundred two billion, eleven million, two hundred eleven thousand, two hundred eight".

Divisors: 1 2 4 8 17 34 68 136 34877 42589 69754 85178 139508 170356 279016 340712 592909 724013 1185818 1448026 2371636 2896052 4743272 5792104 1485376553 2970753106 5941506212 11883012424 25251401401 50502802802 101005605604 202011211208