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BaseRepresentation
bin10110010110100010…
…01000110110001001
31010222022111102121102
423023101020312021
5144034022431441
65302433551145
7603243015005
oct131321106611
933868442542
1012000202121
1150a888a516
1223aaa154b5
13119320581b
1481ba71705
154a37b069b
hex2cb448d89

12000202121 has 2 divisors, whose sum is σ = 12000202122. Its totient is φ = 12000202120.

The previous prime is 12000202099. The next prime is 12000202133. The reversal of 12000202121 is 12120200021.

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., 7503024400 + 4497177721 = 86620^2 + 67061^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000202121 - 218 = 11999939977 is a prime.

It is not a weakly prime, because it can be changed into another prime (12000204121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000101060 + 6000101061.

It is an arithmetic number, because the mean of its divisors is an integer number (6000101061).

Almost surely, 212000202121 is an apocalyptic number.

It is an amenable number.

12000202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000202121 is an equidigital number, since it uses as much as digits as its factorization.

12000202121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12000202121 its reverse (12120200021), we get a palindrome (24120402142).

The spelling of 12000202121 in words is "twelve billion, two hundred two thousand, one hundred twenty-one".