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200210122220021 = 1557947128508943
BaseRepresentation
bin101101100001011100001101…
…001101110010000111110101
3222020212220022122122210112122
4231201130031031302013311
5202220220312242020041
61545451132125525325
760112463316602204
oct5541341515620765
9866786278583478
10200210122220021
115887a6aa587241
121a556090a13845
13879396c6bba54
1437623161a123b
151822dd0eb4c4b
hexb6170d3721f5

200210122220021 has 4 divisors (see below), whose sum is σ = 200210252286912. Its totient is φ = 200209992153132.

The previous prime is 200210122220011. The next prime is 200210122220023. The reversal of 200210122220021 is 120022221012002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200210122220021 - 222 = 200210118025717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200210122220023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62696525 + ... + 65812418.

It is an arithmetic number, because the mean of its divisors is an integer number (50052563071728).

Almost surely, 2200210122220021 is an apocalyptic number.

It is an amenable number.

200210122220021 is a deficient number, since it is larger than the sum of its proper divisors (130066891).

200210122220021 is a wasteful number, since it uses less digits than its factorization.

200210122220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130066890.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 200210122220021 its reverse (120022221012002), we get a palindrome (320232343232023).

The spelling of 200210122220021 in words is "two hundred trillion, two hundred ten billion, one hundred twenty-two million, two hundred twenty thousand, twenty-one".

Divisors: 1 1557947 128508943 200210122220021