210020202021111 has 16 divisors (see below), whose sum is σ = 289758731834880. Its totient is φ = 135220741508160.

The previous prime is 210020202021107. The next prime is 210020202021131. The reversal of 210020202021111 is 111120202020012.

It is not a de Polignac number, because 210020202021111 - 2² = 210020202021107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210020202021131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9146413135 + ... + 9146436096.

It is an arithmetic number, because the mean of its divisors is an integer number (18109920739680).

Almost surely, 2^{210020202021111} is an apocalyptic number.

210020202021111 is a deficient number, since it is larger than the sum of its proper divisors (79738529813769).

210020202021111 is a wasteful number, since it uses less digits than its factorization.

210020202021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18292849366.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210020202021111 its reverse (111120202020012), we get a palindrome (321140404041123).

The spelling of 210020202021111 in words is "two hundred ten trillion, twenty billion, two hundred two million, twenty-one thousand, one hundred eleven".