201020022011 has 4 divisors (see below), whose sum is σ = 209760022992. Its totient is φ = 192280021032.

The previous prime is 201020021957. The next prime is 201020022061. The reversal of 201020022011 is 110220020102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020022011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201020021983 and 201020022001.

It is not an unprimeable number, because it can be changed into a prime (201020022061) 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, 4370000456 + ... + 4370000501.

It is an arithmetic number, because the mean of its divisors is an integer number (52440005748).

Almost surely, 2^201020022011 is an apocalyptic number.

201020022011 is a deficient number, since it is larger than the sum of its proper divisors (8740000981).

201020022011 is an equidigital number, since it uses as much as digits as its factorization.

201020022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740000980.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201020022011 its reverse (110220020102), we get a palindrome (311240042113).

The spelling of 201020022011 in words is "two hundred one billion, twenty million, twenty-two thousand, eleven".