201020111132220 has 72 divisors (see below), whose sum is σ = 612423715700160. Its totient is φ = 53371278403200.

The previous prime is 201020111132213. The next prime is 201020111132261. The reversal of 201020111132220 is 22231111020102.

201020111132220 is a `hidden beast` number, since 2 + 0 + 10 + 201 + 111 + 322 + 20 = 666.

It is a super-2 number, since 2×201020111132220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201020111132193 and 201020111132202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2438339556 + ... + 2438421995.

It is an arithmetic number, because the mean of its divisors is an integer number (8505884940280).

Almost surely, 2^{201020111132220} is an apocalyptic number.

201020111132220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201020111132220 is an abundant number, since it is smaller than the sum of its proper divisors (411403604567940).

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

201020111132220 is a wasteful number, since it uses less digits than its factorization.

201020111132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4876761795 (or 4876761790 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 201020111132220 its reverse (22231111020102), we get a palindrome (223251222152322).

The spelling of 201020111132220 in words is "two hundred one trillion, twenty billion, one hundred eleven million, one hundred thirty-two thousand, two hundred twenty".