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201122121221111 is a prime number
BaseRepresentation
bin101101101110101101100100…
…100101111000001111110111
3222101010002100102200021212202
4231232231210211320033313
5202330141101013033421
61551430121005335115
760235410440316206
oct5556554445701767
9871102312607782
10201122121221111
11590a145a206162
121a68299356749b
13882b97204caac
143794510dc523d
15183b9abb1610b
hexb6eb649783f7

201122121221111 has 2 divisors, whose sum is σ = 201122121221112. Its totient is φ = 201122121221110.

The previous prime is 201122121221059. The next prime is 201122121221123. The reversal of 201122121221111 is 111122121221102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201122121221111 - 214 = 201122121204727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201122121221711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561060610555 + 100561060610556.

It is an arithmetic number, because the mean of its divisors is an integer number (100561060610556).

Almost surely, 2201122121221111 is an apocalyptic number.

201122121221111 is a deficient number, since it is larger than the sum of its proper divisors (1).

201122121221111 is an equidigital number, since it uses as much as digits as its factorization.

201122121221111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 201122121221111 its reverse (111122121221102), we get a palindrome (312244242442213).

Subtracting from 201122121221111 its reverse (111122121221102), we obtain a palindrome (90000000000009).

The spelling of 201122121221111 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred eleven".