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211010102011091 = 1997406092819393
BaseRepresentation
bin101111111110100110011110…
…001011001010010011010011
31000200010100221211000001220202
4233332212132023022103103
5210124142142103323331
62024440411434125415
762305656015262415
oct5776463613122323
91020110854001822
10211010102011091
1161263977621759
121b7bb20828086b
139098223569396
143a16d2cab49b5
15195dccc556ecb
hexbfe99e2ca4d3

211010102011091 has 16 divisors (see below), whose sum is σ = 224411357066400. Its totient is φ = 197838495940608.

The previous prime is 211010102011081. The next prime is 211010102011151. The reversal of 211010102011091 is 190110201010112.

It is a cyclic number.

It is not a de Polignac number, because 211010102011091 - 214 = 211010101994707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211010102011061) 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, 73432691 + ... + 76252083.

It is an arithmetic number, because the mean of its divisors is an integer number (14025709816650).

Almost surely, 2211010102011091 is an apocalyptic number.

211010102011091 is a deficient number, since it is larger than the sum of its proper divisors (13401255055309).

211010102011091 is a wasteful number, since it uses less digits than its factorization.

211010102011091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860118.

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

The spelling of 211010102011091 in words is "two hundred eleven trillion, ten billion, one hundred two million, eleven thousand, ninety-one".

Divisors: 1 19 97 1843 40609 771571 2819393 3939073 53568467 74842387 273481121 5196141299 114492730337 2175361876403 11105794842689 211010102011091