12021331110220 has 24 divisors (see below), whose sum is σ = 26573468770800. Its totient is φ = 4555451788992.

The previous prime is 12021331110167. The next prime is 12021331110233. The reversal of 12021331110220 is 2201113312021.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15817540555 + ... + 15817541314.

It is an arithmetic number, because the mean of its divisors is an integer number (1107227865450).

Almost surely, 2^{12021331110220} is an apocalyptic number.

12021331110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021331110220 is an abundant number, since it is smaller than the sum of its proper divisors (14552137660580).

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

12021331110220 is a wasteful number, since it uses less digits than its factorization.

12021331110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31635081897 (or 31635081895 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12021331110220 its reverse (2201113312021), we get a palindrome (14222444422241).

The spelling of 12021331110220 in words is "twelve trillion, twenty-one billion, three hundred thirty-one million, one hundred ten thousand, two hundred twenty".