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2221670521 = 73110238113
BaseRepresentation
bin1000010001101100…
…0000000001111001
312201211110120000101
42010123000001321
514022221424041
61004242035401
7106024613350
oct20433000171
95654416011
102221670521
11a40090a44
12520048b61
1329537b255
141710bc997
15d009cb31
hex846c0079

2221670521 has 8 divisors (see below), whose sum is σ = 2620957184. Its totient is φ = 1842860160.

The previous prime is 2221670509. The next prime is 2221670531. The reversal of 2221670521 is 1250761222.

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 2221670521 - 25 = 2221670489 is a prime.

It is a super-2 number, since 2×22216705212 = 9871639807760822882, which contains 22 as substring.

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 2221670521.

It is not an unprimeable number, because it can be changed into a prime (2221670531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5118840 + ... + 5119273.

It is an arithmetic number, because the mean of its divisors is an integer number (327619648).

Almost surely, 22221670521 is an apocalyptic number.

It is an amenable number.

2221670521 is a deficient number, since it is larger than the sum of its proper divisors (399286663).

2221670521 is a wasteful number, since it uses less digits than its factorization.

2221670521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10238151.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2221670521 is about 47134.6000407344. The cubic root of 2221670521 is about 1304.8478795884.

The spelling of 2221670521 in words is "two billion, two hundred twenty-one million, six hundred seventy thousand, five hundred twenty-one".

Divisors: 1 7 31 217 10238113 71666791 317381503 2221670521