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12122022013 = 33136622423
BaseRepresentation
bin10110100101000011…
…10110000001111101
31011021210201112002021
423102201312001331
5144311214201023
65322505000141
7606252326023
oct132241660175
934253645067
1012122022013
115160624612
122423783051
1311b2518bba
1482dd02713
154ae32535d
hex2d287607d

12122022013 has 4 divisors (see below), whose sum is σ = 12158644768. Its totient is φ = 12085399260.

The previous prime is 12122021987. The next prime is 12122022037. The reversal of 12122022013 is 31022022121.

It is a happy number.

12122022013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31022022121 = 311000710391.

It is a cyclic number.

It is not a de Polignac number, because 12122022013 - 25 = 12122021981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122022313) 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, 18310881 + ... + 18311542.

It is an arithmetic number, because the mean of its divisors is an integer number (3039661192).

Almost surely, 212122022013 is an apocalyptic number.

It is an amenable number.

12122022013 is a deficient number, since it is larger than the sum of its proper divisors (36622755).

12122022013 is an equidigital number, since it uses as much as digits as its factorization.

12122022013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36622754.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12122022013 its reverse (31022022121), we get a palindrome (43144044134).

The spelling of 12122022013 in words is "twelve billion, one hundred twenty-two million, twenty-two thousand, thirteen".

Divisors: 1 331 36622423 12122022013