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20030220211 = 37853634651
BaseRepresentation
bin10010101001111001…
…001110011110110011
31220200221101121120211
4102221321032132303
5312010214021321
613111325044551
71306240030321
oct225171163663
956627347524
1020030220211
11854959aa01
123a700b6757
131b72a28c11
14d80310d11
157c373a0e1
hex4a9e4e7b3

20030220211 has 8 divisors (see below), whose sum is σ = 20595726704. Its totient is φ = 19465984800.

The previous prime is 20030220191. The next prime is 20030220229. The reversal of 20030220211 is 11202203002.

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 20030220211 - 211 = 20030218163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20030220191 and 20030220200.

It is not an unprimeable number, because it can be changed into a prime (20030220241) 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, 285765 + ... + 348886.

It is an arithmetic number, because the mean of its divisors is an integer number (2574465838).

Almost surely, 220030220211 is an apocalyptic number.

20030220211 is a deficient number, since it is larger than the sum of its proper divisors (565506493).

20030220211 is an equidigital number, since it uses as much as digits as its factorization.

20030220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635541.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20030220211 its reverse (11202203002), we get a palindrome (31232423213).

The spelling of 20030220211 in words is "twenty billion, thirty million, two hundred twenty thousand, two hundred eleven".

Divisors: 1 37 853 31561 634651 23482087 541357303 20030220211