202112020111 has 4 divisors (see below), whose sum is σ = 202128543424. Its totient is φ = 202095496800.

The previous prime is 202112020067. The next prime is 202112020181. The reversal of 202112020111 is 111020211202.

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 202112020111 - 2¹³ = 202112011919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202112020091 and 202112020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202112020181) 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, 8243295 + ... + 8267776.

It is an arithmetic number, because the mean of its divisors is an integer number (50532135856).

Almost surely, 2^202112020111 is an apocalyptic number.

202112020111 is a deficient number, since it is larger than the sum of its proper divisors (16523313).

202112020111 is a wasteful number, since it uses less digits than its factorization.

202112020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16523312.

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

Adding to 202112020111 its reverse (111020211202), we get a palindrome (313132231313).

The spelling of 202112020111 in words is "two hundred two billion, one hundred twelve million, twenty thousand, one hundred eleven".