2121110111201 has 2 divisors, whose sum is σ = 2121110111202. Its totient is φ = 2121110111200.

The previous prime is 2121110111177. The next prime is 2121110111243. The reversal of 2121110111201 is 1021110111212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1253089942225 + 868020168976 = 1119415^2 + 931676^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121110111201 - 2¹⁰ = 2121110110177 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121110131201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060555055600 + 1060555055601.

It is an arithmetic number, because the mean of its divisors is an integer number (1060555055601).

Almost surely, 2^{2121110111201} is an apocalyptic number.

It is an amenable number.

2121110111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121110111201 is an equidigital number, since it uses as much as digits as its factorization.

2121110111201 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 14.

Adding to 2121110111201 its reverse (1021110111212), we get a palindrome (3142220222413).

The spelling of 2121110111201 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, one hundred eleven thousand, two hundred one".