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12122411201 = 83146053147
BaseRepresentation
bin10110100101000110…
…10101000011000001
31011021211110021221122
423102203111003001
5144311314124301
65322521202025
7606255536465
oct132243250301
934254407848
1012122411201
11516086aa5a
122423930315
1311b26240a4
1482dda44a5
154ae3a081b
hex2d28d50c1

12122411201 has 4 divisors (see below), whose sum is σ = 12268464432. Its totient is φ = 11976357972.

The previous prime is 12122411159. The next prime is 12122411243. The reversal of 12122411201 is 10211422121.

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 an interprime number because it is at equal distance from previous prime (12122411159) and next prime (12122411243).

It is a cyclic number.

It is not a de Polignac number, because 12122411201 - 26 = 12122411137 is a prime.

It is a super-2 number, since 2×121224112012 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122411201.

It is not an unprimeable number, because it can be changed into a prime (12122411261) 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, 73026491 + ... + 73026656.

It is an arithmetic number, because the mean of its divisors is an integer number (3067116108).

Almost surely, 212122411201 is an apocalyptic number.

It is an amenable number.

12122411201 is a deficient number, since it is larger than the sum of its proper divisors (146053231).

12122411201 is an equidigital number, since it uses as much as digits as its factorization.

12122411201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146053230.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12122411201 its reverse (10211422121), we get a palindrome (22333833322).

The spelling of 12122411201 in words is "twelve billion, one hundred twenty-two million, four hundred eleven thousand, two hundred one".

Divisors: 1 83 146053147 12122411201