201020021211020 has 96 divisors (see below), whose sum is σ = 489505232543040. Its totient is φ = 68530598051840.

The previous prime is 201020021210959. The next prime is 201020021211041. The reversal of 201020021211020 is 20112120020102.

It is a junction number, because it is equal to n+sod(n) for n = 201020021210986 and 201020021211004.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 103608215 + ... + 105530574.

It is an arithmetic number, because the mean of its divisors is an integer number (5099012838990).

Almost surely, 2^{201020021211020} is an apocalyptic number.

201020021211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201020021211020 is an abundant number, since it is smaller than the sum of its proper divisors (288485211332020).

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

201020021211020 is a wasteful number, since it uses less digits than its factorization.

201020021211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209139083 (or 209139081 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201020021211020 its reverse (20112120020102), we get a palindrome (221132141231122).

The spelling of 201020021211020 in words is "two hundred one trillion, twenty billion, twenty-one million, two hundred eleven thousand, twenty".