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1001111212109 is a prime number
BaseRepresentation
bin11101001000101101110…
…00001101000001001101
310112201001011100211221002
432210112320031001031
5112400233432241414
62043523143350045
7132220316620331
oct16442670150115
93481034324832
101001111212109
113566291a9008
12142032152325
13735345739b8
143664dc637c1
151b0940b44de
hexe916e0d04d

1001111212109 has 2 divisors, whose sum is σ = 1001111212110. Its totient is φ = 1001111212108.

The previous prime is 1001111212103. The next prime is 1001111212141. The reversal of 1001111212109 is 9012121111001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 742414873225 + 258696338884 = 861635^2 + 508622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001111212109 - 28 = 1001111211853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001111212103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500555606054 + 500555606055.

It is an arithmetic number, because the mean of its divisors is an integer number (500555606055).

Almost surely, 21001111212109 is an apocalyptic number.

It is an amenable number.

1001111212109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001111212109 is an equidigital number, since it uses as much as digits as its factorization.

1001111212109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 1001111212109 in words is "one trillion, one billion, one hundred eleven million, two hundred twelve thousand, one hundred nine".