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2002221213 = 31051635021
BaseRepresentation
bin111011101010111…
…0111100010011101
312011112112101011020
41313111313202131
513100032034323
6530402314353
7100421412426
oct16725674235
95145471136
102002221213
11938224483
1247a6589b9
1325ba743a5
1414dcb664d
15baba0ae3
hex7757789d

2002221213 has 8 divisors (see below), whose sum is σ = 2672172576. Its totient is φ = 1333542000.

The previous prime is 2002221203. The next prime is 2002221241. The reversal of 2002221213 is 3121222002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2002221213 - 25 = 2002221181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002221192 and 2002221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002221203) 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, 314358 + ... + 320663.

It is an arithmetic number, because the mean of its divisors is an integer number (334021572).

Almost surely, 22002221213 is an apocalyptic number.

It is an amenable number.

2002221213 is a deficient number, since it is larger than the sum of its proper divisors (669951363).

2002221213 is a wasteful number, since it uses less digits than its factorization.

2002221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636075.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2002221213 is about 44746.1865749474. The cubic root of 2002221213 is about 1260.3873028321.

Adding to 2002221213 its reverse (3121222002), we get a palindrome (5123443215).

The spelling of 2002221213 in words is "two billion, two million, two hundred twenty-one thousand, two hundred thirteen".

Divisors: 1 3 1051 3153 635021 1905063 667407071 2002221213