201021022110001 has 2 divisors, whose sum is σ = 201021022110002. Its totient is φ = 201021022110000.

The previous prime is 201021022109983. The next prime is 201021022110031. The reversal of 201021022110001 is 100011220120102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190904653080625 + 10116369029376 = 13816825^2 + 3180624^2 .

It is a cyclic number.

It is not a de Polignac number, because 201021022110001 - 2²³ = 201021013721393 is a prime.

It is not a weakly prime, because it can be changed into another prime (201021022110031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510511055000 + 100510511055001.

It is an arithmetic number, because the mean of its divisors is an integer number (100510511055001).

Almost surely, 2^{201021022110001} is an apocalyptic number.

It is an amenable number.

201021022110001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021022110001 is an equidigital number, since it uses as much as digits as its factorization.

201021022110001 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 13.

Adding to 201021022110001 its reverse (100011220120102), we get a palindrome (301032242230103).

The spelling of 201021022110001 in words is "two hundred one trillion, twenty-one billion, twenty-two million, one hundred ten thousand, one".