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111231443212 = 2227807860803
BaseRepresentation
bin110011110010111101…
…0010010000100001100
3101122002220120202212221
41213211322102010030
53310300222140322
6123033215505124
711015263444621
oct1474572220414
9348086522787
10111231443212
114319a28267a
12196832281a4
13a648680226
14555297a348
152d602949c7
hex19e5e9210c

111231443212 has 6 divisors (see below), whose sum is σ = 194655025628. Its totient is φ = 55615721604.

The previous prime is 111231443179. The next prime is 111231443221. The reversal of 111231443212 is 212344132111.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13903930398 + ... + 13903930405.

Almost surely, 2111231443212 is an apocalyptic number.

It is an amenable number.

111231443212 is a deficient number, since it is larger than the sum of its proper divisors (83423582416).

111231443212 is a wasteful number, since it uses less digits than its factorization.

111231443212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27807860807 (or 27807860805 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

Adding to 111231443212 its reverse (212344132111), we get a palindrome (323575575323).

The spelling of 111231443212 in words is "one hundred eleven billion, two hundred thirty-one million, four hundred forty-three thousand, two hundred twelve".

Divisors: 1 2 4 27807860803 55615721606 111231443212