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13122032011 = 111192912001
BaseRepresentation
bin11000011100010001…
…00101000110001011
31020212111102021220121
430032020211012023
5203333220011021
610010030404111
7643114301044
oct141610450613
936774367817
1013122032011
115624054960
122662660637
13131175a7aa
148c6a538cb
1551c009741
hex30e22518b

13122032011 has 4 divisors (see below), whose sum is σ = 14314944024. Its totient is φ = 11929120000.

The previous prime is 13122031987. The next prime is 13122032017. The reversal of 13122032011 is 11023022131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11023022131 = 111002092921.

It is a cyclic number.

It is not a de Polignac number, because 13122032011 - 215 = 13121999243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13122032017) 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, 596455990 + ... + 596456011.

It is an arithmetic number, because the mean of its divisors is an integer number (3578736006).

Almost surely, 213122032011 is an apocalyptic number.

13122032011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13122032011 is a deficient number, since it is larger than the sum of its proper divisors (1192912013).

13122032011 is a wasteful number, since it uses less digits than its factorization.

13122032011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192912012.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13122032011 its reverse (11023022131), we get a palindrome (24145054142).

The spelling of 13122032011 in words is "thirteen billion, one hundred twenty-two million, thirty-two thousand, eleven".

Divisors: 1 11 1192912001 13122032011