201211011012001 has 2 divisors, whose sum is σ = 201211011012002. Its totient is φ = 201211011012000.

The previous prime is 201211011011957. The next prime is 201211011012019. The reversal of 201211011012001 is 100210110112102.

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., 175648370497600 + 25562640514401 = 13253240^2 + 5055951^2 .

It is a cyclic number.

It is not a de Polignac number, because 201211011012001 - 2⁷ = 201211011011873 is a prime.

It is not a weakly prime, because it can be changed into another prime (201211011012701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605505506000 + 100605505506001.

It is an arithmetic number, because the mean of its divisors is an integer number (100605505506001).

Almost surely, 2^{201211011012001} is an apocalyptic number.

It is an amenable number.

201211011012001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211011012001 is an equidigital number, since it uses as much as digits as its factorization.

201211011012001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201211011012001 its reverse (100210110112102), we get a palindrome (301421121124103).

The spelling of 201211011012001 in words is "two hundred one trillion, two hundred eleven billion, eleven million, twelve thousand, one".