21020300010111 has 32 divisors (see below), whose sum is σ = 28525178193408. Its totient is φ = 13766034309120.

The previous prime is 21020300010097. The next prime is 21020300010211. The reversal of 21020300010111 is 11101000302012.

It is not a de Polignac number, because 21020300010111 - 2⁷ = 21020300009983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020300010211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 558927670 + ... + 558965276.

It is an arithmetic number, because the mean of its divisors is an integer number (891411818544).

Almost surely, 2^{21020300010111} is an apocalyptic number.

21020300010111 is a deficient number, since it is larger than the sum of its proper divisors (7504878183297).

21020300010111 is a wasteful number, since it uses less digits than its factorization.

21020300010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47871.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21020300010111 its reverse (11101000302012), we get a palindrome (32121300312123).

The spelling of 21020300010111 in words is "twenty-one trillion, twenty billion, three hundred million, ten thousand, one hundred eleven".