2111300309021 has 2 divisors, whose sum is σ = 2111300309022. Its totient is φ = 2111300309020.

The previous prime is 2111300308973. The next prime is 2111300309029. The reversal of 2111300309021 is 1209030031112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2100398025625 + 10902283396 = 1449275^2 + 104414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111300309021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111300309029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055650154510 + 1055650154511.

It is an arithmetic number, because the mean of its divisors is an integer number (1055650154511).

Almost surely, 2^{2111300309021} is an apocalyptic number.

It is an amenable number.

2111300309021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111300309021 is an equidigital number, since it uses as much as digits as its factorization.

2111300309021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 2111300309021 in words is "two trillion, one hundred eleven billion, three hundred million, three hundred nine thousand, twenty-one".