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BaseRepresentation
bin110000000000001100111011…
…111000111010111100011001
31000200111212221022102100220010
4300000030323320322330121
5210132443002241241441
62025003124544552133
762316632303460123
oct6000147370727431
91020455838370803
10211120122212121
11612a65a510a131
121b8185b1922649
1390a5707cba055
143a1c3a8836213
151961abb2e0116
hexc0033be3af19

211120122212121 has 4 divisors (see below), whose sum is σ = 281493496282832. Its totient is φ = 140746748141412.

The previous prime is 211120122212099. The next prime is 211120122212141. The reversal of 211120122212121 is 121212221021112.

Adding to 211120122212121 its reverse (121212221021112), we get a palindrome (332332343233233).

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 211120122212121 - 217 = 211120122081049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211120122212141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35186687035351 + ... + 35186687035356.

It is an arithmetic number, because the mean of its divisors is an integer number (70373374070708).

Almost surely, 2211120122212121 is an apocalyptic number.

It is an amenable number.

211120122212121 is a deficient number, since it is larger than the sum of its proper divisors (70373374070711).

211120122212121 is an equidigital number, since it uses as much as digits as its factorization.

211120122212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70373374070710.

The product of its (nonzero) digits is 128, while the sum is 21.

The spelling of 211120122212121 in words is "two hundred eleven trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".

Divisors: 1 3 70373374070707 211120122212121