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90212212102 = 210716322711393
BaseRepresentation
bin101010000000100010…
…0010001110110000110
322121212001012012101211
41110001010101312012
52434223311241402
6105235400442034
76342354102505
oct1240104216606
9277761165354
1090212212102
11352934951a1
1215597a7931a
138678a93c7c
14451b17c83c
15252ece94d7
hex1501111d86

90212212102 has 32 divisors (see below), whose sum is σ = 138038401152. Its totient is φ = 44210893824.

The previous prime is 90212212099. The next prime is 90212212117. The reversal of 90212212102 is 20121221209.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7912518 + ... + 7923910.

It is an arithmetic number, because the mean of its divisors is an integer number (4313700036).

Almost surely, 290212212102 is an apocalyptic number.

90212212102 is a deficient number, since it is larger than the sum of its proper divisors (47826189050).

90212212102 is a wasteful number, since it uses less digits than its factorization.

90212212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11892.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 90212212102 in words is "ninety billion, two hundred twelve million, two hundred twelve thousand, one hundred two".

Divisors: 1 2 107 163 214 227 326 454 11393 17441 22786 24289 34882 37001 48578 74002 1219051 1857059 2438102 2586211 3714118 3959107 5172422 7918214 198705313 276724577 397410626 421552393 553449154 843104786 45106106051 90212212102