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2002210221 = 31185371129
BaseRepresentation
bin111011101010111…
…0100110110101101
312011112111211002010
41313111310312231
513100031211341
6530402151433
7100421335404
oct16725646655
95145454063
102002210221
119382171a0
1247a652579
1325ba6c39b
1414dcb263b
15bab9c716
hex77574dad

2002210221 has 16 divisors (see below), whose sum is σ = 2915760960. Its totient is φ = 1212021120.

The previous prime is 2002210219. The next prime is 2002210229. The reversal of 2002210221 is 1220122002.

It is not a de Polignac number, because 2002210221 - 21 = 2002210219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002210197 and 2002210206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002210229) 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, 7416 + ... + 63713.

It is an arithmetic number, because the mean of its divisors is an integer number (182235060).

Almost surely, 22002210221 is an apocalyptic number.

It is an amenable number.

2002210221 is a deficient number, since it is larger than the sum of its proper divisors (913550739).

2002210221 is a wasteful number, since it uses less digits than its factorization.

2002210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71996.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2002210221 is about 44746.0637486696. The cubic root of 2002210221 is about 1260.3849963599.

Adding to 2002210221 its reverse (1220122002), we get a palindrome (3222332223).

The spelling of 2002210221 in words is "two billion, two million, two hundred ten thousand, two hundred twenty-one".

Divisors: 1 3 11 33 853 2559 9383 28149 71129 213387 782419 2347257 60673037 182019111 667403407 2002210221