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1212210201208 = 231721614124623
BaseRepresentation
bin10001101000111101010…
…110111100001001111000
311021212221000100121011211
4101220331112330021320
5124330101302414313
62324514235332504
7153402461462206
oct21507526741170
94255830317154
101212210201208
11428106068a76
12176b268b1134
138a407168b36
1442958022076
15217ebb2ce3d
hex11a3d5bc278

1212210201208 has 32 divisors (see below), whose sum is σ = 2407708013760. Its totient is φ = 570187745280.

The previous prime is 1212210201203. The next prime is 1212210201253. The reversal of 1212210201208 is 8021020122121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210201203) 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, 1768416 + ... + 2356207.

It is an arithmetic number, because the mean of its divisors is an integer number (75240875430).

Almost surely, 21212210201208 is an apocalyptic number.

It is an amenable number.

1212210201208 is a deficient number, since it is larger than the sum of its proper divisors (1195497812552).

1212210201208 is a wasteful number, since it uses less digits than its factorization.

1212210201208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126807 (or 4126803 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 1212210201208 its reverse (8021020122121), we get a palindrome (9233230323329).

The spelling of 1212210201208 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred one thousand, two hundred eight".

Divisors: 1 2 4 8 17 34 68 136 2161 4322 8644 17288 36737 73474 146948 293896 4124623 8249246 16498492 32996984 70118591 140237182 280474364 560948728 8913310303 17826620606 35653241212 71306482424 151526275151 303052550302 606105100604 1212210201208