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22001100001 = 172575035729
BaseRepresentation
bin10100011111010111…
…100010010011100001
32002210021221200101121
4110133113202103201
5330024240200001
614035051532241
71406131156456
oct243727422341
962707850347
1022001100001
119370058081
12432015a081
1320c814888a
1410c9d8982d
1588b7996a1
hex51f5e24e1

22001100001 has 8 divisors (see below), whose sum is σ = 23385930120. Its totient is φ = 20626341888.

The previous prime is 22001099987. The next prime is 22001100029. The reversal of 22001100001 is 10000110022.

It can be written as a sum of positive squares in 4 ways, for example, as 8562726225 + 13438373776 = 92535^2 + 115924^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22001100001 - 25 = 22001099969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22001100091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2513496 + ... + 2522233.

It is an arithmetic number, because the mean of its divisors is an integer number (2923241265).

Almost surely, 222001100001 is an apocalyptic number.

It is an amenable number.

22001100001 is a deficient number, since it is larger than the sum of its proper divisors (1384830119).

22001100001 is a wasteful number, since it uses less digits than its factorization.

22001100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5036003.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 22001100001 its reverse (10000110022), we get a palindrome (32001210023).

The spelling of 22001100001 in words is "twenty-two billion, one million, one hundred thousand, one".

Divisors: 1 17 257 4369 5035729 85607393 1294182353 22001100001