201020012220111 has 16 divisors (see below), whose sum is σ = 324334809633024. Its totient is φ = 108111603210624.

The previous prime is 201020012220109. The next prime is 201020012220119. The reversal of 201020012220111 is 111022210020102.

It is not a de Polignac number, because 201020012220111 - 2¹ = 201020012220109 is a prime.

It is a super-2 number, since 2×201020012220111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020012220119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281540633005 + ... + 281540633718.

It is an arithmetic number, because the mean of its divisors is an integer number (20270925602064).

Almost surely, 2^{201020012220111} is an apocalyptic number.

201020012220111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201020012220111 is a deficient number, since it is larger than the sum of its proper divisors (123314797412913).

201020012220111 is a wasteful number, since it uses less digits than its factorization.

201020012220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563081266750.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201020012220111 its reverse (111022210020102), we get a palindrome (312042222240213).

The spelling of 201020012220111 in words is "two hundred one trillion, twenty billion, twelve million, two hundred twenty thousand, one hundred eleven".