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2201122120121 = 2315995043919
BaseRepresentation
bin100000000001111101000…
…110100010000110111001
321210102110222121010212222
4200001331012202012321
5242030344230320441
64403103114013425
7315011600214221
oct40017506420671
97712428533788
102201122120121
11779544065491
122b6713417275
1312c7461aa642
147876b9cb081
153c3c9c06d4b
hex2007d1a21b9

2201122120121 has 4 divisors (see below), whose sum is σ = 2201217187200. Its totient is φ = 2201027053044.

The previous prime is 2201122120111. The next prime is 2201122120177. The reversal of 2201122120121 is 1210212211022.

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 a cyclic number.

It is not a de Polignac number, because 2201122120121 - 214 = 2201122103737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2201122120121.

It is not an unprimeable number, because it can be changed into a prime (2201122120111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47498801 + ... + 47545118.

It is an arithmetic number, because the mean of its divisors is an integer number (550304296800).

Almost surely, 22201122120121 is an apocalyptic number.

It is an amenable number.

2201122120121 is a deficient number, since it is larger than the sum of its proper divisors (95067079).

2201122120121 is an equidigital number, since it uses as much as digits as its factorization.

2201122120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95067078.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2201122120121 its reverse (1210212211022), we get a palindrome (3411334331143).

Subtracting from 2201122120121 its reverse (1210212211022), we obtain a palindrome (990909909099).

The spelling of 2201122120121 in words is "two trillion, two hundred one billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".

Divisors: 1 23159 95043919 2201122120121