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2122220313 = 321713870721
BaseRepresentation
bin111111001111110…
…1000001100011001
312110220022221222100
41332133220030121
513321242022223
6550330314013
7103406401143
oct17637501431
95426287870
102122220313
11999a35594
124b2888909
1327a89aa85
14161bd1c93
15c64a6043
hex7e7e8319

2122220313 has 12 divisors (see below), whose sum is σ = 3245748948. Its totient is φ = 1331589120.

The previous prime is 2122220297. The next prime is 2122220341. The reversal of 2122220313 is 3130222212.

It can be written as a sum of positive squares in 2 ways, for example, as 1178686224 + 943534089 = 34332^2 + 30717^2 .

It is not a de Polignac number, because 2122220313 - 24 = 2122220297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122220363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6935208 + ... + 6935513.

It is an arithmetic number, because the mean of its divisors is an integer number (270479079).

Almost surely, 22122220313 is an apocalyptic number.

It is an amenable number.

2122220313 is a deficient number, since it is larger than the sum of its proper divisors (1123528635).

2122220313 is a wasteful number, since it uses less digits than its factorization.

2122220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13870744 (or 13870741 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2122220313 is about 46067.5624816421. The cubic root of 2122220313 is about 1285.0799736244.

Adding to 2122220313 its reverse (3130222212), we get a palindrome (5252442525).

The spelling of 2122220313 in words is "two billion, one hundred twenty-two million, two hundred twenty thousand, three hundred thirteen".

Divisors: 1 3 9 17 51 153 13870721 41612163 124836489 235802257 707406771 2122220313