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2222121210211 = 75357110489571
BaseRepresentation
bin100000010101100000101…
…111101101000101100011
321212102200110002110002101
4200111200233231011203
5242401401012211321
64420454533231231
7316354143432220
oct40254057550543
97772613073071
102222121210211
1178743a5466a1
122ba7b3a92517
13131711864236
14797a0864947
153cc08524791
hex20560bed163

2222121210211 has 16 divisors (see below), whose sum is σ = 2592015199488. Its totient is φ = 1865465128800.

The previous prime is 2222121210161. The next prime is 2222121210263. The reversal of 2222121210211 is 1120121212222.

It is not a de Polignac number, because 2222121210211 - 219 = 2222120685923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222121210311) 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 15 ways as a sum of consecutive naturals, for example, 5032945 + ... + 5456626.

It is an arithmetic number, because the mean of its divisors is an integer number (162000949968).

Almost surely, 22222121210211 is an apocalyptic number.

2222121210211 is a deficient number, since it is larger than the sum of its proper divisors (369893989277).

2222121210211 is a wasteful number, since it uses less digits than its factorization.

2222121210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10490202.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2222121210211 its reverse (1120121212222), we get a palindrome (3342242422433).

The spelling of 2222121210211 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred ten thousand, two hundred eleven".

Divisors: 1 7 53 371 571 3997 30263 211841 10489571 73426997 555947263 3891630841 5989545041 41926815287 317445887173 2222121210211