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12202131344 = 2413173450829
BaseRepresentation
bin10110101110100110…
…11011111110010000
31011111101110111102112
423113103123332100
5144442221200334
65334450004452
7611244255644
oct132723337620
934441414375
1012202131344
1151a186a977
122446576728
1311c5cb6c80
1483a7d6c24
154b639b4ce
hex2d74dbf90

12202131344 has 40 divisors (see below), whose sum is σ = 26957883960. Its totient is φ = 5300471808.

The previous prime is 12202131301. The next prime is 12202131349. The reversal of 12202131344 is 44313120221.

It can be written as a sum of positive squares in 4 ways, for example, as 18386944 + 12183744400 = 4288^2 + 110380^2 .

It is not an unprimeable number, because it can be changed into a prime (12202131349) 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, 1721879 + ... + 1728950.

It is an arithmetic number, because the mean of its divisors is an integer number (673947099).

Almost surely, 212202131344 is an apocalyptic number.

It is an amenable number.

12202131344 is an abundant number, since it is smaller than the sum of its proper divisors (14755752616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12202131344 is a wasteful number, since it uses less digits than its factorization.

12202131344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450867 (or 3450861 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12202131344 its reverse (44313120221), we get a palindrome (56515251565).

The spelling of 12202131344 in words is "twelve billion, two hundred two million, one hundred thirty-one thousand, three hundred forty-four".

Divisors: 1 2 4 8 13 16 17 26 34 52 68 104 136 208 221 272 442 884 1768 3536 3450829 6901658 13803316 27606632 44860777 55213264 58664093 89721554 117328186 179443108 234656372 358886216 469312744 717772432 762633209 938625488 1525266418 3050532836 6101065672 12202131344