201020220122011 has 32 divisors (see below), whose sum is σ = 216316842730560. Its totient is φ = 186242681880576.

The previous prime is 201020220121993. The next prime is 201020220122017. The reversal of 201020220122011 is 110221022020102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201020220122011 - 2⁵ = 201020220121979 is a prime.

It is a super-2 number, since 2×201020220122011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201020220122017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162229075 + ... + 163463491.

It is an arithmetic number, because the mean of its divisors is an integer number (6759901335330).

Almost surely, 2^{201020220122011} is an apocalyptic number.

201020220122011 is a deficient number, since it is larger than the sum of its proper divisors (15296622608549).

201020220122011 is a wasteful number, since it uses less digits than its factorization.

201020220122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235503.

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

Adding to 201020220122011 its reverse (110221022020102), we get a palindrome (311241242142113).

The spelling of 201020220122011 in words is "two hundred one trillion, twenty billion, two hundred twenty million, one hundred twenty-two thousand, eleven".