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2011204001 = 12553160217
BaseRepresentation
bin111011111100000…
…1000100110100001
312012011102202020002
41313320020212201
513104332012001
6531323025345
7100560644342
oct16770104641
95164382202
102011204001
119422aa374
1248166b255
1326089ac51
141511740c9
15bb87746b
hex77e089a1

2011204001 has 4 divisors (see below), whose sum is σ = 2011376772. Its totient is φ = 2011031232.

The previous prime is 2011203991. The next prime is 2011204009. The reversal of 2011204001 is 1004021102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1482250000 + 528954001 = 38500^2 + 22999^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011204001 - 218 = 2010941857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011204009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67556 + ... + 92661.

It is an arithmetic number, because the mean of its divisors is an integer number (502844193).

Almost surely, 22011204001 is an apocalyptic number.

It is an amenable number.

2011204001 is a deficient number, since it is larger than the sum of its proper divisors (172771).

2011204001 is a wasteful number, since it uses less digits than its factorization.

2011204001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172770.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2011204001 is about 44846.4491459469. The cubic root of 2011204001 is about 1262.2693630386.

Adding to 2011204001 its reverse (1004021102), we get a palindrome (3015225103).

The spelling of 2011204001 in words is "two billion, eleven million, two hundred four thousand, one".

Divisors: 1 12553 160217 2011204001