21020313201011 has 2 divisors, whose sum is σ = 21020313201012. Its totient is φ = 21020313201010.

The previous prime is 21020313200969. The next prime is 21020313201029. The reversal of 21020313201011 is 11010231302012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21020313201011 is a prime.

It is not a weakly prime, because it can be changed into another prime (21020313201071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510156600505 + 10510156600506.

It is an arithmetic number, because the mean of its divisors is an integer number (10510156600506).

Almost surely, 2^{21020313201011} is an apocalyptic number.

21020313201011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21020313201011 is an equidigital number, since it uses as much as digits as its factorization.

21020313201011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21020313201011 its reverse (11010231302012), we get a palindrome (32030544503023).

The spelling of 21020313201011 in words is "twenty-one trillion, twenty billion, three hundred thirteen million, two hundred one thousand, eleven".