212020201111 has 4 divisors (see below), whose sum is σ = 212046131800. Its totient is φ = 211994270424.

The previous prime is 212020201103. The next prime is 212020201171. The reversal of 212020201111 is 111102020212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212020201111 - 2³ = 212020201103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212020201091 and 212020201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020201171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12953076 + ... + 12969433.

It is an arithmetic number, because the mean of its divisors is an integer number (53011532950).

Almost surely, 2^212020201111 is an apocalyptic number.

212020201111 is a deficient number, since it is larger than the sum of its proper divisors (25930689).

212020201111 is an equidigital number, since it uses as much as digits as its factorization.

212020201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25930688.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212020201111 its reverse (111102020212), we get a palindrome (323122221323).

The spelling of 212020201111 in words is "two hundred twelve billion, twenty million, two hundred one thousand, one hundred eleven".