2102341120021 has 2 divisors, whose sum is σ = 2102341120022. Its totient is φ = 2102341120020.

The previous prime is 2102341119971. The next prime is 2102341120051. The reversal of 2102341120021 is 1200211432012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1106516751921 + 995824368100 = 1051911^2 + 997910^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102341120021 - 2¹¹ = 2102341117973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102341120051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051170560010 + 1051170560011.

It is an arithmetic number, because the mean of its divisors is an integer number (1051170560011).

Almost surely, 2^{2102341120021} is an apocalyptic number.

It is an amenable number.

2102341120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102341120021 is an equidigital number, since it uses as much as digits as its factorization.

2102341120021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2102341120021 its reverse (1200211432012), we get a palindrome (3302552552033).

The spelling of 2102341120021 in words is "two trillion, one hundred two billion, three hundred forty-one million, one hundred twenty thousand, twenty-one".