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200120221 = 7314183271
BaseRepresentation
bin10111110110110…
…01011110011101
3111221120011100001
423323121132131
5402212321341
631505134301
74646664610
oct1373313635
9457504301
10200120221
11a2a65314
125702a391
13325c9c42
141c814177
151287ed31
hexbed979d

200120221 has 32 divisors (see below), whose sum is σ = 245661696. Its totient is φ = 159408000.

The previous prime is 200120203. The next prime is 200120251. The reversal of 200120221 is 122021002.

It is not a de Polignac number, because 200120221 - 25 = 200120189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200120198 and 200120207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738316 + ... + 738586.

It is an arithmetic number, because the mean of its divisors is an integer number (7676928).

Almost surely, 2200120221 is an apocalyptic number.

It is an amenable number.

200120221 is a deficient number, since it is larger than the sum of its proper divisors (45541475).

200120221 is a wasteful number, since it uses less digits than its factorization.

200120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 200120221 is about 14146.3854393976. The cubic root of 200120221 is about 584.9207002842.

Adding to 200120221 its reverse (122021002), we get a palindrome (322141223).

It can be divided in two parts, 2001 and 20221, that added together give a palindrome (22222).

The spelling of 200120221 in words is "two hundred million, one hundred twenty thousand, two hundred twenty-one".

Divisors: 1 7 31 41 83 217 271 287 581 1271 1897 2573 3403 8401 8897 11111 18011 22493 23821 58807 77777 105493 157451 344441 697283 738451 922213 2411087 4880981 6455491 28588603 200120221