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2012112205 = 51093691949
BaseRepresentation
bin111011111101110…
…0110010101001101
312012020010220001021
41313323212111031
513110100042310
6531354314141
7100601446225
oct16773462515
95166126037
102012112205
1194286a754
12481a28951
13260b2844c
1415132d085
15bb9a65da
hex77ee654d

2012112205 has 8 divisors (see below), whose sum is σ = 2436687000. Its totient is φ = 1594921536.

The previous prime is 2012112173. The next prime is 2012112233. The reversal of 2012112205 is 5022112102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 946546756 + 1065565449 = 30766^2 + 32643^2 .

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 2012112205 - 25 = 2012112173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845430 + ... + 1846519.

It is an arithmetic number, because the mean of its divisors is an integer number (304585875).

Almost surely, 22012112205 is an apocalyptic number.

It is an amenable number.

2012112205 is a deficient number, since it is larger than the sum of its proper divisors (424574795).

2012112205 is a wasteful number, since it uses less digits than its factorization.

2012112205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692063.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2012112205 is about 44856.5737099926. The cubic root of 2012112205 is about 1262.4593364023.

Adding to 2012112205 its reverse (5022112102), we get a palindrome (7034224307).

The spelling of 2012112205 in words is "two billion, twelve million, one hundred twelve thousand, two hundred five".

Divisors: 1 5 109 545 3691949 18459745 402422441 2012112205