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100000122221 = 441112267011
BaseRepresentation
bin101110100100001111…
…0001100010101101101
3100120010011212112220102
41131020132030111231
53114300012402341
6113534525400445
710140045004556
oct1351036142555
9316104775812
10100000122221
1139456509a0a
1217469a09125
13957885326c
144ba909332d
152904260c9b
hex174878c56d

100000122221 has 4 divisors (see below), whose sum is σ = 100002433344. Its totient is φ = 99997811100.

The previous prime is 100000122217. The next prime is 100000122239. The reversal of 100000122221 is 122221000001.

It is a happy number.

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 100000122221 - 22 = 100000122217 is a prime.

It is a Duffinian number.

100000122221 is a modest number, since divided by 122221 gives 10 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000122241) 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 3 ways as a sum of consecutive naturals, for example, 1089395 + ... + 1177616.

It is an arithmetic number, because the mean of its divisors is an integer number (25000608336).

Almost surely, 2100000122221 is an apocalyptic number.

It is an amenable number.

100000122221 is a deficient number, since it is larger than the sum of its proper divisors (2311123).

100000122221 is an equidigital number, since it uses as much as digits as its factorization.

100000122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311122.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100000122221 its reverse (122221000001), we get a palindrome (222221122222).

The spelling of 100000122221 in words is "one hundred billion, one hundred twenty-two thousand, two hundred twenty-one".

Divisors: 1 44111 2267011 100000122221