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2212222001 = 111812394649
BaseRepresentation
bin1000001111011011…
…1101010000110001
312201011200112002012
42003312331100301
514012312101001
61003303332305
7105551401553
oct20366752061
95634615065
102212222001
11a35818150
12518a51095
13293420702
1416db3d4d3
15ce3332bb
hex83dbd431

2212222001 has 16 divisors (see below), whose sum is σ = 2437344000. Its totient is φ = 1991203200.

The previous prime is 2212221959. The next prime is 2212222007. The reversal of 2212222001 is 1002222122.

2212222001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2212222001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212222007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473525 + ... + 478173.

It is an arithmetic number, because the mean of its divisors is an integer number (152334000).

Almost surely, 22212222001 is an apocalyptic number.

It is an amenable number.

2212222001 is a deficient number, since it is larger than the sum of its proper divisors (225121999).

2212222001 is a wasteful number, since it uses less digits than its factorization.

2212222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2212222001 is about 47034.2641167054. The cubic root of 2212222001 is about 1302.9954596227.

Adding to 2212222001 its reverse (1002222122), we get a palindrome (3214444123).

It can be divided in two parts, 221 and 2222001, that added together give a palindrome (2222222).

The spelling of 2212222001 in words is "two billion, two hundred twelve million, two hundred twenty-two thousand, one".

Divisors: 1 11 181 239 1991 2629 4649 43259 51139 475849 841469 1111111 9256159 12222221 201111091 2212222001