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2131202222 = 219411519059
BaseRepresentation
bin111111100000111…
…1001000010101110
312111112020021211122
41333001321002232
513331041432342
6551251020542
7103545630362
oct17701710256
95445207748
102131202222
119a400a856
124b589a752
1327c6c4106
1416308d2a2
15c717c4d2
hex7f0790ae

2131202222 has 32 divisors (see below), whose sum is σ = 3470342400. Its totient is φ = 978264000.

The previous prime is 2131202219. The next prime is 2131202231. The reversal of 2131202222 is 2222021312.

It is a super-2 number, since 2×21312022222 = 9084045822115474568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2131202222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230729 + ... + 239787.

It is an arithmetic number, because the mean of its divisors is an integer number (108448200).

Almost surely, 22131202222 is an apocalyptic number.

2131202222 is a deficient number, since it is larger than the sum of its proper divisors (1339140178).

2131202222 is a wasteful number, since it uses less digits than its factorization.

2131202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9272.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2131202222 is about 46164.9458138965. The cubic root of 2131202222 is about 1286.8903772052.

Adding to 2131202222 its reverse (2222021312), we get a palindrome (4353223534).

The spelling of 2131202222 in words is "two billion, one hundred thirty-one million, two hundred two thousand, two hundred twenty-two".

Divisors: 1 2 19 38 41 82 151 302 779 1558 2869 5738 6191 9059 12382 18118 117629 172121 235258 344242 371419 742838 1367909 2735818 7056961 14113922 25990271 51980542 56084269 112168538 1065601111 2131202222