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1120221121 is a prime number
BaseRepresentation
bin100001011000101…
…0011011111000001
32220001220010111011
41002301103133001
54243234033441
6303054120521
736521502535
oct10261233701
92801803434
101120221121
11525376788
122731b0141
1314b110946
14a8ac3bc5
156852c581
hex42c537c1

1120221121 has 2 divisors, whose sum is σ = 1120221122. Its totient is φ = 1120221120.

The previous prime is 1120221119. The next prime is 1120221131. The reversal of 1120221121 is 1211220211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050732225 + 69488896 = 32415^2 + 8336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120221121 - 21 = 1120221119 is a prime.

Together with 1120221119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1120221131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560110560 + 560110561.

It is an arithmetic number, because the mean of its divisors is an integer number (560110561).

Almost surely, 21120221121 is an apocalyptic number.

It is an amenable number.

1120221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120221121 is an equidigital number, since it uses as much as digits as its factorization.

1120221121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1120221121 is about 33469.7045251374. The cubic root of 1120221121 is about 1038.5671592950.

Adding to 1120221121 its reverse (1211220211), we get a palindrome (2331441332).

It can be divided in two parts, 11202 and 21121, that added together give a palindrome (32323).

The spelling of 1120221121 in words is "one billion, one hundred twenty million, two hundred twenty-one thousand, one hundred twenty-one".