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21012202100195 = 514591288015929
BaseRepresentation
bin1001100011100010010001…
…10101111001010111100011
32202101202011111021211211122
410301301020311321113203
510223230442214201240
6112404512234002455
74266036645640025
oct461611065712743
982352144254748
1021012202100195
116771252331459
12243437bb7642b
13b955995552b7
14528dd3090015
1526689798e4b5
hex131c48d795e3

21012202100195 has 8 divisors (see below), whose sum is σ = 25216370703360. Its totient is φ = 16808609558080.

The previous prime is 21012202100189. The next prime is 21012202100209. The reversal of 21012202100195 is 59100120221012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21012202100195 - 24 = 21012202100179 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143935010 + ... + 144080919.

It is an arithmetic number, because the mean of its divisors is an integer number (3152046337920).

Almost surely, 221012202100195 is an apocalyptic number.

21012202100195 is a deficient number, since it is larger than the sum of its proper divisors (4204168603165).

21012202100195 is a wasteful number, since it uses less digits than its factorization.

21012202100195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288030525.

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 21012202100195 in words is "twenty-one trillion, twelve billion, two hundred two million, one hundred thousand, one hundred ninety-five".

Divisors: 1 5 14591 72955 288015929 1440079645 4202440420039 21012202100195