2021340342101 has 2 divisors, whose sum is σ = 2021340342102. Its totient is φ = 2021340342100.

The previous prime is 2021340342097. The next prime is 2021340342107. The reversal of 2021340342101 is 1012430431202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2021259324100 + 81018001 = 1421710^2 + 9001^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021340342101 - 2² = 2021340342097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021340342107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010670171050 + 1010670171051.

It is an arithmetic number, because the mean of its divisors is an integer number (1010670171051).

Almost surely, 2^{2021340342101} is an apocalyptic number.

It is an amenable number.

2021340342101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021340342101 is an equidigital number, since it uses as much as digits as its factorization.

2021340342101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2021340342101 its reverse (1012430431202), we get a palindrome (3033770773303).

The spelling of 2021340342101 in words is "two trillion, twenty-one billion, three hundred forty million, three hundred forty-two thousand, one hundred one".