2120111212201 has 2 divisors, whose sum is σ = 2120111212202. Its totient is φ = 2120111212200.

The previous prime is 2120111212187. The next prime is 2120111212231. The reversal of 2120111212201 is 1022121110212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2120110723600 + 488601 = 1456060^2 + 699^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120111212201 - 2¹¹ = 2120111210153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120111212231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060055606100 + 1060055606101.

It is an arithmetic number, because the mean of its divisors is an integer number (1060055606101).

Almost surely, 2^{2120111212201} is an apocalyptic number.

It is an amenable number.

2120111212201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120111212201 is an equidigital number, since it uses as much as digits as its factorization.

2120111212201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2120111212201 its reverse (1022121110212), we get a palindrome (3142232322413).

The spelling of 2120111212201 in words is "two trillion, one hundred twenty billion, one hundred eleven million, two hundred twelve thousand, two hundred one".