2121220202041 has 2 divisors, whose sum is σ = 2121220202042. Its totient is φ = 2121220202040.

The previous prime is 2121220202009. The next prime is 2121220202069. The reversal of 2121220202041 is 1402020221212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1242342076816 + 878878125225 = 1114604^2 + 937485^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121220202041 - 2⁵ = 2121220202009 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121220202441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060610101020 + 1060610101021.

It is an arithmetic number, because the mean of its divisors is an integer number (1060610101021).

Almost surely, 2^{2121220202041} is an apocalyptic number.

It is an amenable number.

2121220202041 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121220202041 is an equidigital number, since it uses as much as digits as its factorization.

2121220202041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2121220202041 its reverse (1402020221212), we get a palindrome (3523240423253).

The spelling of 2121220202041 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred two thousand, forty-one".