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1213222331203 is a prime number
BaseRepresentation
bin10001101001111001101…
…011111010001101000011
311021222112112212010111221
4101221321223322031003
5124334134404044303
62325202513015511
7153436531443421
oct21517153721503
94258475763457
101213222331203
11428585417243
12177169854597
138a538a6221c
1442a1260a111
152185a9084bd
hex11a79afa343

1213222331203 has 2 divisors, whose sum is σ = 1213222331204. Its totient is φ = 1213222331202.

The previous prime is 1213222331179. The next prime is 1213222331219. The reversal of 1213222331203 is 3021332223121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213222331203 - 229 = 1212685460291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213222335203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606611165601 + 606611165602.

It is an arithmetic number, because the mean of its divisors is an integer number (606611165602).

Almost surely, 21213222331203 is an apocalyptic number.

1213222331203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213222331203 is an equidigital number, since it uses as much as digits as its factorization.

1213222331203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1213222331203 its reverse (3021332223121), we get a palindrome (4234554554324).

The spelling of 1213222331203 in words is "one trillion, two hundred thirteen billion, two hundred twenty-two million, three hundred thirty-one thousand, two hundred three".