201122020111 has 4 divisors (see below), whose sum is σ = 209866455792. Its totient is φ = 192377584432.

The previous prime is 201122020109. The next prime is 201122020123. The reversal of 201122020111 is 111020221102.

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 201122020111 - 2¹ = 201122020109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201122020091 and 201122020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122020171) 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, 4372217806 + ... + 4372217851.

It is an arithmetic number, because the mean of its divisors is an integer number (52466613948).

Almost surely, 2^201122020111 is an apocalyptic number.

201122020111 is a deficient number, since it is larger than the sum of its proper divisors (8744435681).

201122020111 is an equidigital number, since it uses as much as digits as its factorization.

201122020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8744435680.

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

Adding to 201122020111 its reverse (111020221102), we get a palindrome (312142241213).

The spelling of 201122020111 in words is "two hundred one billion, one hundred twenty-two million, twenty thousand, one hundred eleven".