201122022211 has 4 divisors (see below), whose sum is σ = 219405842424. Its totient is φ = 182838202000.

The previous prime is 201122022149. The next prime is 201122022217. The reversal of 201122022211 is 112220221102.

It is a happy number.

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 201122022211 - 2¹¹ = 201122020163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201122022217) 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, 9141910090 + ... + 9141910111.

It is an arithmetic number, because the mean of its divisors is an integer number (54851460606).

Almost surely, 2^201122022211 is an apocalyptic number.

201122022211 is a deficient number, since it is larger than the sum of its proper divisors (18283820213).

201122022211 is a wasteful number, since it uses less digits than its factorization.

201122022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18283820212.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201122022211 its reverse (112220221102), we get a palindrome (313342243313).

The spelling of 201122022211 in words is "two hundred one billion, one hundred twenty-two million, twenty-two thousand, two hundred eleven".