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1213103222301 = 3404367740767
BaseRepresentation
bin10001101001110010100…
…101100010111000011101
311021222020020201202211010
4101221302211202320131
5124333413411103201
62325143020045433
7153433554153225
oct21516245427035
94258206652733
101213103222301
11428524163a33
12177135993879
138a51a18aa99
1442a00883085
152185022bbd6
hex11a72962e1d

1213103222301 has 4 divisors (see below), whose sum is σ = 1617470963072. Its totient is φ = 808735481532.

The previous prime is 1213103222273. The next prime is 1213103222321. The reversal of 1213103222301 is 1032223013121.

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 not a de Polignac number, because 1213103222301 - 26 = 1213103222237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213103222321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202183870381 + ... + 202183870386.

It is an arithmetic number, because the mean of its divisors is an integer number (404367740768).

Almost surely, 21213103222301 is an apocalyptic number.

It is an amenable number.

1213103222301 is a deficient number, since it is larger than the sum of its proper divisors (404367740771).

1213103222301 is an equidigital number, since it uses as much as digits as its factorization.

1213103222301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404367740770.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1213103222301 its reverse (1032223013121), we get a palindrome (2245326235422).

The spelling of 1213103222301 in words is "one trillion, two hundred thirteen billion, one hundred three million, two hundred twenty-two thousand, three hundred one".

Divisors: 1 3 404367740767 1213103222301