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22200122121 = 316756897789
BaseRepresentation
bin10100101011001110…
…101111101100001001
32010022011110001102020
4110223032233230021
5330431212401441
614110521355053
71414065632052
oct245316575411
963264401366
1022200122121
119462432371
124376938a89
13212a44ca48
141108595729
1589deade66
hex52b3afb09

22200122121 has 16 divisors (see below), whose sum is σ = 29786467200. Its totient is φ = 14706983808.

The previous prime is 22200122117. The next prime is 22200122141. The reversal of 22200122121 is 12122100222.

It is not a de Polignac number, because 22200122121 - 22 = 22200122117 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22200122121.

It is not an unprimeable number, because it can be changed into a prime (22200122141) 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, 2846295 + ... + 2854083.

It is an arithmetic number, because the mean of its divisors is an integer number (1861654200).

Almost surely, 222200122121 is an apocalyptic number.

It is an amenable number.

22200122121 is a deficient number, since it is larger than the sum of its proper divisors (7586345079).

22200122121 is a wasteful number, since it uses less digits than its factorization.

22200122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13648.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22200122121 its reverse (12122100222), we get a palindrome (34322222343).

The spelling of 22200122121 in words is "twenty-two billion, two hundred million, one hundred twenty-two thousand, one hundred twenty-one".

Divisors: 1 3 167 501 5689 7789 17067 23367 950063 1300763 2850189 3902289 44311621 132934863 7400040707 22200122121