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22312312201 = 171312488953
BaseRepresentation
bin10100110001111010…
…101101110110001001
32010120222112220021101
4110301322231312021
5331143422442301
614130010141401
71416630344614
oct246172556611
963528486241
1022312312201
11950a79a443
1243a8421861
132147770bca
14111943b17b
158a8c70701
hex531eadd89

22312312201 has 4 divisors (see below), whose sum is σ = 23624801172. Its totient is φ = 20999823232.

The previous prime is 22312312177. The next prime is 22312312229. The reversal of 22312312201 is 10221321322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10221321322 = 25110660661.

It can be written as a sum of positive squares in 2 ways, for example, as 7354777600 + 14957534601 = 85760^2 + 122301^2 .

It is a cyclic number.

It is not a de Polignac number, because 22312312201 - 213 = 22312304009 is a prime.

It is a super-3 number, since 3×223123122013 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22310312201) 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, 656244460 + ... + 656244493.

It is an arithmetic number, because the mean of its divisors is an integer number (5906200293).

Almost surely, 222312312201 is an apocalyptic number.

It is an amenable number.

22312312201 is a deficient number, since it is larger than the sum of its proper divisors (1312488971).

22312312201 is a wasteful number, since it uses less digits than its factorization.

22312312201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312488970.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22312312201 its reverse (10221321322), we get a palindrome (32533633523).

The spelling of 22312312201 in words is "twenty-two billion, three hundred twelve million, three hundred twelve thousand, two hundred one".

Divisors: 1 17 1312488953 22312312201