20201112021220 has 48 divisors (see below), whose sum is σ = 45686037152448. Its totient is φ = 7458799420800.

The previous prime is 20201112021197. The next prime is 20201112021221. The reversal of 20201112021220 is 2212021110202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20201112021194 and 20201112021203.

It is not an unprimeable number, because it can be changed into a prime (20201112021221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31492695 + ... + 32127745.

It is an arithmetic number, because the mean of its divisors is an integer number (951792440676).

Almost surely, 2^{20201112021220} is an apocalyptic number.

20201112021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201112021220 is an abundant number, since it is smaller than the sum of its proper divisors (25484925131228).

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

20201112021220 is a wasteful number, since it uses less digits than its factorization.

20201112021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757420 (or 757418 counting only the distinct ones).

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

Adding to 20201112021220 its reverse (2212021110202), we get a palindrome (22413133131422).

The spelling of 20201112021220 in words is "twenty trillion, two hundred one billion, one hundred twelve million, twenty-one thousand, two hundred twenty".