201020101111220 has 24 divisors (see below), whose sum is σ = 440496221566464. Its totient is φ = 76912038685856.

The previous prime is 201020101111213. The next prime is 201020101111223. The reversal of 201020101111220 is 22111101020102.

It is a super-2 number, since 2×201020101111220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201020101111195 and 201020101111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020101111223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218500109444 + ... + 218500110363.

It is an arithmetic number, because the mean of its divisors is an integer number (18354009231936).

Almost surely, 2^{201020101111220} is an apocalyptic number.

201020101111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201020101111220 is an abundant number, since it is smaller than the sum of its proper divisors (239476120455244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201020101111220 is a wasteful number, since it uses less digits than its factorization.

201020101111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437000219839 (or 437000219837 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201020101111220 its reverse (22111101020102), we get a palindrome (223131202131322).

The spelling of 201020101111220 in words is "two hundred one trillion, twenty billion, one hundred one million, one hundred eleven thousand, two hundred twenty".