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2012222001 = 3670740667
BaseRepresentation
bin111011111110000…
…0001001000110001
312012020100110122210
41313330001020301
513110112101001
6531400522333
7100602414306
oct16774011061
95166313583
102012222001
11942935199
12481a803a9
13260b6640a
1415135b0ad
15bb9c8dd6
hex77f01231

2012222001 has 4 divisors (see below), whose sum is σ = 2682962672. Its totient is φ = 1341481332.

The previous prime is 2012221973. The next prime is 2012222027. The reversal of 2012222001 is 1002222102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2012222001 - 214 = 2012205617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012222041) 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, 335370331 + ... + 335370336.

It is an arithmetic number, because the mean of its divisors is an integer number (670740668).

Almost surely, 22012222001 is an apocalyptic number.

It is an amenable number.

2012222001 is a deficient number, since it is larger than the sum of its proper divisors (670740671).

2012222001 is an equidigital number, since it uses as much as digits as its factorization.

2012222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670740670.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2012222001 is about 44857.7975495900. The cubic root of 2012222001 is about 1262.4822990820.

Adding to 2012222001 its reverse (1002222102), we get a palindrome (3014444103).

The spelling of 2012222001 in words is "two billion, twelve million, two hundred twenty-two thousand, one".

Divisors: 1 3 670740667 2012222001