201111001022 has 4 divisors (see below), whose sum is σ = 301666501536. Its totient is φ = 100555500510.

The previous prime is 201111000941. The next prime is 201111001027. The reversal of 201111001022 is 220100111102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220100111102 = 2 ⋅110050055551.

It is a junction number, because it is equal to n+sod(n) for n = 201111000994 and 201111001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111001027) 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 as a sum of consecutive naturals, namely, 50277750254 + ... + 50277750257.

It is an arithmetic number, because the mean of its divisors is an integer number (75416625384).

Almost surely, 2^201111001022 is an apocalyptic number.

201111001022 is a deficient number, since it is larger than the sum of its proper divisors (100555500514).

201111001022 is a wasteful number, since it uses less digits than its factorization.

201111001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100555500513.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201111001022 its reverse (220100111102), we get a palindrome (421211112124).

The spelling of 201111001022 in words is "two hundred one billion, one hundred eleven million, one thousand, twenty-two".