201220022011 has 4 divisors (see below), whose sum is σ = 213056493912. Its totient is φ = 189383550112.

The previous prime is 201220022009. The next prime is 201220022057. The reversal of 201220022011 is 110220022102.

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 201220022011 - 2¹ = 201220022009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201220021982 and 201220022000.

It is not an unprimeable number, because it can be changed into a prime (201220022711) 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, 5918235925 + ... + 5918235958.

It is an arithmetic number, because the mean of its divisors is an integer number (53264123478).

Almost surely, 2^201220022011 is an apocalyptic number.

201220022011 is a deficient number, since it is larger than the sum of its proper divisors (11836471901).

201220022011 is a wasteful number, since it uses less digits than its factorization.

201220022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11836471900.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201220022011 its reverse (110220022102), we get a palindrome (311440044113).

Subtracting from 201220022011 its reverse (110220022102), we obtain a palindrome (90999999909).

The spelling of 201220022011 in words is "two hundred one billion, two hundred twenty million, twenty-two thousand, eleven".