2021111102201 has 2 divisors, whose sum is σ = 2021111102202. Its totient is φ = 2021111102200.

The previous prime is 2021111102183. The next prime is 2021111102209. The reversal of 2021111102201 is 1022011111202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2021091565801 + 19536400 = 1421651^2 + 4420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021111102201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021111102209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010555551100 + 1010555551101.

It is an arithmetic number, because the mean of its divisors is an integer number (1010555551101).

Almost surely, 2^{2021111102201} is an apocalyptic number.

It is an amenable number.

2021111102201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021111102201 is an equidigital number, since it uses as much as digits as its factorization.

2021111102201 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 14.

Adding to 2021111102201 its reverse (1022011111202), we get a palindrome (3043122213403).

Subtracting from 2021111102201 its reverse (1022011111202), we obtain a palindrome (999099990999).

The spelling of 2021111102201 in words is "two trillion, twenty-one billion, one hundred eleven million, one hundred two thousand, two hundred one".