2111020020221 has 12 divisors (see below), whose sum is σ = 2456400718080. Its totient is φ = 1808911986840.

The previous prime is 2111020020191. The next prime is 2111020020227. The reversal of 2111020020221 is 1220200201112.

It is not a de Polignac number, because 2111020020221 - 2¹⁰ = 2111020019197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111020020196 and 2111020020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111020020227) 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 11 ways as a sum of consecutive naturals, for example, 6186251 + ... + 6518568.

It is an arithmetic number, because the mean of its divisors is an integer number (204700059840).

Almost surely, 2^{2111020020221} is an apocalyptic number.

It is an amenable number.

2111020020221 is a deficient number, since it is larger than the sum of its proper divisors (345380697859).

2111020020221 is a wasteful number, since it uses less digits than its factorization.

2111020020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12708224 (or 12708217 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2111020020221 its reverse (1220200201112), we get a palindrome (3331220221333).

The spelling of 2111020020221 in words is "two trillion, one hundred eleven billion, twenty million, twenty thousand, two hundred twenty-one".