21021114011 has 2 divisors, whose sum is σ = 21021114012. Its totient is φ = 21021114010.

The previous prime is 21021114001. The next prime is 21021114067. The reversal of 21021114011 is 11041112012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21021114011 - 2¹⁸ = 21020851867 is a prime.

It is not a weakly prime, because it can be changed into another prime (21021114001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510557005 + 10510557006.

It is an arithmetic number, because the mean of its divisors is an integer number (10510557006).

Almost surely, 2^21021114011 is an apocalyptic number.

21021114011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21021114011 is an equidigital number, since it uses as much as digits as its factorization.

21021114011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21021114011 its reverse (11041112012), we get a palindrome (32062226023).

The spelling of 21021114011 in words is "twenty-one billion, twenty-one million, one hundred fourteen thousand, eleven".