210020020012111 has 2 divisors, whose sum is σ = 210020020012112. Its totient is φ = 210020020012110.

The previous prime is 210020020012109. The next prime is 210020020012141. The reversal of 210020020012111 is 111210020020012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210020020012111 - 2¹ = 210020020012109 is a prime.

Together with 210020020012109, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 210020020012091 and 210020020012100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210020020012141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010010006055 + 105010010006056.

It is an arithmetic number, because the mean of its divisors is an integer number (105010010006056).

Almost surely, 2^{210020020012111} is an apocalyptic number.

210020020012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

210020020012111 is an equidigital number, since it uses as much as digits as its factorization.

210020020012111 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 13.

Adding to 210020020012111 its reverse (111210020020012), we get a palindrome (321230040032123).

It can be divided in two parts, 210020020012 and 111, that multiplied together give a palindrome (23312222221332).

The spelling of 210020020012111 in words is "two hundred ten trillion, twenty billion, twenty million, twelve thousand, one hundred eleven".