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12201332331 = 337991911677
BaseRepresentation
bin10110101110100000…
…11000111001101011
31011111022221220101110
423113100120321223
5144442020113311
65334420521403
7611234420316
oct132720307153
934438856343
1012201332331
1151a1374631
122446250263
1311c5a97396
1483a66997d
154b628e8a6
hex2d7418e6b

12201332331 has 16 divisors (see below), whose sum is σ = 16330515200. Its totient is φ = 8103237408.

The previous prime is 12201332329. The next prime is 12201332357. The reversal of 12201332331 is 13323310221.

It is not a de Polignac number, because 12201332331 - 21 = 12201332329 is a prime.

It is a super-2 number, since 2×122013323312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201332298 and 12201332307.

It is not an unprimeable number, because it can be changed into a prime (12201342331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1039065 + ... + 1050741.

It is an arithmetic number, because the mean of its divisors is an integer number (1020657200).

Almost surely, 212201332331 is an apocalyptic number.

12201332331 is a deficient number, since it is larger than the sum of its proper divisors (4129182869).

12201332331 is a wasteful number, since it uses less digits than its factorization.

12201332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12978.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12201332331 its reverse (13323310221), we get a palindrome (25524642552).

The spelling of 12201332331 in words is "twelve billion, two hundred one million, three hundred thirty-two thousand, three hundred thirty-one".

Divisors: 1 3 379 919 1137 2757 11677 35031 348301 1044903 4425583 10731163 13276749 32193489 4067110777 12201332331