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202011200221 = 4797383115693
BaseRepresentation
bin1011110000100011001…
…1100100101011011101
3201022102111201020112111
42330020303210223131
511302204331401341
6232445213034021
720411011604335
oct2741063445335
9638374636474
10202011200221
1178744068746
1233199185911
1316084bb848c
149ac52540c5
1553c4cea681
hex2f08ce4add

202011200221 has 16 divisors (see below), whose sum is σ = 208982237184. Its totient is φ = 195162223104.

The previous prime is 202011200219. The next prime is 202011200269. The reversal of 202011200221 is 122002110202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202011200221 - 21 = 202011200219 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 (202011203221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1688251 + ... + 1803943.

It is an arithmetic number, because the mean of its divisors is an integer number (13061389824).

Almost surely, 2202011200221 is an apocalyptic number.

It is an amenable number.

202011200221 is a deficient number, since it is larger than the sum of its proper divisors (6971036963).

202011200221 is a wasteful number, since it uses less digits than its factorization.

202011200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116220.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202011200221 its reverse (122002110202), we get a palindrome (324013310423).

The spelling of 202011200221 in words is "two hundred two billion, eleven million, two hundred thousand, two hundred twenty-one".

Divisors: 1 47 97 383 4559 18001 37151 115693 1746097 5437571 11222221 44310419 527444387 2082589693 4298110643 202011200221