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12212231141 = 113088135951
BaseRepresentation
bin10110101111110011…
…11101101111100101
31011112002110121202002
423113321331233211
5200002312344031
65335450255045
7611426152265
oct132771755745
934462417662
1012212231141
1151a7539010
122449a27485
1311c8112096
1483bca57a5
154b71e3ccb
hex2d7e7dbe5

12212231141 has 8 divisors (see below), whose sum is σ = 13323235968. Its totient is φ = 11101360000.

The previous prime is 12212231131. The next prime is 12212231149. The reversal of 12212231141 is 14113221221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12212231141 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 (12212231149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321716 + ... + 357666.

It is an arithmetic number, because the mean of its divisors is an integer number (1665404496).

Almost surely, 212212231141 is an apocalyptic number.

12212231141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12212231141 is a deficient number, since it is larger than the sum of its proper divisors (1111004827).

12212231141 is a wasteful number, since it uses less digits than its factorization.

12212231141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66843.

The product of its digits is 192, while the sum is 20.

Adding to 12212231141 its reverse (14113221221), we get a palindrome (26325452362).

The spelling of 12212231141 in words is "twelve billion, two hundred twelve million, two hundred thirty-one thousand, one hundred forty-one".

Divisors: 1 11 30881 35951 339691 395461 1110202831 12212231141