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1120202021 is a prime number
BaseRepresentation
bin100001011000100…
…1110110100100101
32220001212011021202
41002301032310211
54243232431041
6303053452245
736521363051
oct10261166445
92801764252
101120202021
115253633a4
122731a1085
1314b105043
14a8abac61
1568526a9b
hex42c4ed25

1120202021 has 2 divisors, whose sum is σ = 1120202022. Its totient is φ = 1120202020.

The previous prime is 1120201997. The next prime is 1120202023. The reversal of 1120202021 is 1202020211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1077808900 + 42393121 = 32830^2 + 6511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120202021 - 210 = 1120200997 is a prime.

It is a Sophie Germain prime.

Together with 1120202023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1120201993 and 1120202011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120202023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560101010 + 560101011.

It is an arithmetic number, because the mean of its divisors is an integer number (560101011).

Almost surely, 21120202021 is an apocalyptic number.

It is an amenable number.

1120202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120202021 is an equidigital number, since it uses as much as digits as its factorization.

1120202021 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 11.

The square root of 1120202021 is about 33469.4191912558. The cubic root of 1120202021 is about 1038.5612566670.

Adding to 1120202021 its reverse (1202020211), we get a palindrome (2322222232).

The spelling of 1120202021 in words is "one billion, one hundred twenty million, two hundred two thousand, twenty-one".