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12010201331 = 76991559969
BaseRepresentation
bin10110010111101110…
…10010000011110011
31011000000022102221112
423023313102003303
5144044102420311
65303432143535
7603424012142
oct131367220363
934000272845
1012010201331
11510349a027
1223b2237bab
1311952c6c0b
1481d115759
154a45d828b
hex2cbdd20f3

12010201331 has 4 divisors (see below), whose sum is σ = 12011769000. Its totient is φ = 12008633664.

The previous prime is 12010201309. The next prime is 12010201337. The reversal of 12010201331 is 13310201021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12010201331 is a prime.

It is a super-2 number, since 2×120102013312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12010201337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772286 + ... + 787683.

It is an arithmetic number, because the mean of its divisors is an integer number (3002942250).

Almost surely, 212010201331 is an apocalyptic number.

12010201331 is a deficient number, since it is larger than the sum of its proper divisors (1567669).

12010201331 is an equidigital number, since it uses as much as digits as its factorization.

12010201331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567668.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12010201331 its reverse (13310201021), we get a palindrome (25320402352).

The spelling of 12010201331 in words is "twelve billion, ten million, two hundred one thousand, three hundred thirty-one".

Divisors: 1 7699 1559969 12010201331