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BaseRepresentation
bin10001110010001100001…
…001100010010100111001
311022211111210012021110001
4101302030021202110321
5130010401214202301
62333233552153001
7154203215534413
oct21621411422471
94284453167401
101222122022201
11431332025873
12178a32238761
138b3267c1182
144321858d9b3
1521bcbdbdc01
hex11c8c262539

1222122022201 has 4 divisors (see below), whose sum is σ = 1228454260852. Its totient is φ = 1215789783552.

The previous prime is 1222122022193. The next prime is 1222122022207. The reversal of 1222122022201 is 1022202212221.

Adding to 1222122022201 its reverse (1022202212221), we get a palindrome (2244324234422).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 371217244176 + 850904778025 = 609276^2 + 922445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222122022201 - 23 = 1222122022193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222122022207) 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, 3166119036 + ... + 3166119421.

It is an arithmetic number, because the mean of its divisors is an integer number (307113565213).

Almost surely, 21222122022201 is an apocalyptic number.

It is an amenable number.

1222122022201 is a deficient number, since it is larger than the sum of its proper divisors (6332238651).

1222122022201 is an equidigital number, since it uses as much as digits as its factorization.

1222122022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332238650.

The product of its (nonzero) digits is 256, while the sum is 19.

The spelling of 1222122022201 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, twenty-two thousand, two hundred one".

Divisors: 1 193 6332238457 1222122022201