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221260117501 = 6133413108557
BaseRepresentation
bin1100111000010000100…
…0010111010111111101
3210011002222221112222201
43032010020113113331
512111120042230001
6245351232111501
721662013652603
oct3160410272775
9704088845881
10221260117501
1185921628145
1236a6b695591
1317b31aa9867
14a9cd8a5873
155b4eb53501
hex33842175fd

221260117501 has 8 divisors (see below), whose sum is σ = 224896134744. Its totient is φ = 217624384320.

The previous prime is 221260117489. The next prime is 221260117511. The reversal of 221260117501 is 105711062122.

It can be written as a sum of positive squares in 4 ways, for example, as 28055915001 + 193204202500 = 167499^2 + 439550^2 .

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 221260117501 - 25 = 221260117469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221260117501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221260117511) 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, 1983915 + ... + 2092471.

It is an arithmetic number, because the mean of its divisors is an integer number (28112016843).

Almost surely, 2221260117501 is an apocalyptic number.

It is an amenable number.

221260117501 is a deficient number, since it is larger than the sum of its proper divisors (3636017243).

221260117501 is a wasteful number, since it uses less digits than its factorization.

221260117501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142031.

The product of its (nonzero) digits is 1680, while the sum is 28.

Adding to 221260117501 its reverse (105711062122), we get a palindrome (326971179623).

The spelling of 221260117501 in words is "two hundred twenty-one billion, two hundred sixty million, one hundred seventeen thousand, five hundred one".

Divisors: 1 61 33413 108557 2038193 6621977 3627215041 221260117501