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212021121001 is a prime number
BaseRepresentation
bin1100010101110101110…
…0011000111111101001
3202021021010010220102011
43011131130120333221
511433204401333001
6241222352235521
721214036536004
oct3053534307751
9667233126364
10212021121001
1181a10439348
123511153bba1
1316cbb96a421
14a39483a53b
1557ad9b7d51
hex315d718fe9

212021121001 has 2 divisors, whose sum is σ = 212021121002. Its totient is φ = 212021121000.

The previous prime is 212021120953. The next prime is 212021121047. The reversal of 212021121001 is 100121120212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209122375401 + 2898745600 = 457299^2 + 53840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-212021121001 is a prime.

It is not a weakly prime, because it can be changed into another prime (212021121071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010560500 + 106010560501.

It is an arithmetic number, because the mean of its divisors is an integer number (106010560501).

Almost surely, 2212021121001 is an apocalyptic number.

It is an amenable number.

212021121001 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021121001 is an equidigital number, since it uses as much as digits as its factorization.

212021121001 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.

Adding to 212021121001 its reverse (100121120212), we get a palindrome (312142241213).

The spelling of 212021121001 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, one".