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10202122220021 is a prime number
BaseRepresentation
bin1001010001110101110111…
…0111101111000111110101
31100010022110102211212220022
42110131131313233013311
52314122421242020041
633410442405414525
72102036046021554
oct224353567570765
940108412755808
1010202122220021
11328377202a566
1211892a610a445
13590096045294
14273add001d9b
1512a5a986d24b
hex9475ddef1f5

10202122220021 has 2 divisors, whose sum is σ = 10202122220022. Its totient is φ = 10202122220020.

The previous prime is 10202122219957. The next prime is 10202122220039. The reversal of 10202122220021 is 12002222120201.

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., 6590716083121 + 3611406136900 = 2567239^2 + 1900370^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202122220021 - 26 = 10202122219957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202122220621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101061110010 + 5101061110011.

It is an arithmetic number, because the mean of its divisors is an integer number (5101061110011).

Almost surely, 210202122220021 is an apocalyptic number.

It is an amenable number.

10202122220021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202122220021 is an equidigital number, since it uses as much as digits as its factorization.

10202122220021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10202122220021 its reverse (12002222120201), we get a palindrome (22204344340222).

The spelling of 10202122220021 in words is "ten trillion, two hundred two billion, one hundred twenty-two million, two hundred twenty thousand, twenty-one".