220112121021020 has 12 divisors (see below), whose sum is σ = 462235454144184. Its totient is φ = 88044848408400.

The previous prime is 220112121020989. The next prime is 220112121021031. The reversal of 220112121021020 is 20120121211022.

It is a self number, because there is not a number n which added to its sum of digits gives 220112121021020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5502803025506 + ... + 5502803025545.

It is an arithmetic number, because the mean of its divisors is an integer number (38519621178682).

Almost surely, 2^{220112121021020} is an apocalyptic number.

220112121021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220112121021020 is an abundant number, since it is smaller than the sum of its proper divisors (242123333123164).

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

220112121021020 is a wasteful number, since it uses less digits than its factorization.

220112121021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11005606051060 (or 11005606051058 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220112121021020 its reverse (20120121211022), we get a palindrome (240232242232042).

The spelling of 220112121021020 in words is "two hundred twenty trillion, one hundred twelve billion, one hundred twenty-one million, twenty-one thousand, twenty".