Search a number
-
+
991121121101121 = 317163119225444617
BaseRepresentation
bin1110000101011010110101111…
…0010110100100010101000001
311210222021020212001001220121220
43201112231132112210111001
52014402012024000213441
613431534431330305253
7415523065216626063
oct34126553626442501
94728236761056556
10991121121101121
1126789011a42948a
12931b1ab6128229
13337054227103aa
14136a6737da9733
15798b505228466
hex3856b5e5a4541

991121121101121 has 16 divisors (see below), whose sum is σ = 1407814050049344. Its totient is φ = 618064704889344.

The previous prime is 991121121101119. The next prime is 991121121101129. The reversal of 991121121101121 is 121101121121199.

It is not a de Polignac number, because 991121121101121 - 21 = 991121121101119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (991121121101129) 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, 59612713996 + ... + 59612730621.

It is an arithmetic number, because the mean of its divisors is an integer number (87988378128084).

Almost surely, 2991121121101121 is an apocalyptic number.

It is an amenable number.

991121121101121 is a deficient number, since it is larger than the sum of its proper divisors (416692928948223).

991121121101121 is a wasteful number, since it uses less digits than its factorization.

991121121101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119225444800.

The product of its (nonzero) digits is 648, while the sum is 33.

The spelling of 991121121101121 in words is "nine hundred ninety-one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred one thousand, one hundred twenty-one".

Divisors: 1 3 17 51 163 489 2771 8313 119225444617 357676333851 2026832558489 6080497675467 19433747472571 58301242417713 330373707033707 991121121101121