20112220221020 has 24 divisors (see below), whose sum is σ = 42238185151344. Its totient is φ = 8044407576576.

The previous prime is 20112220221013. The next prime is 20112220221047. The reversal of 20112220221020 is 2012202221102.

It is a happy number.

20112220221020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 20112220221020.

It is a congruent number.

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, 29688677 + ... + 30358556.

It is an arithmetic number, because the mean of its divisors is an integer number (1759924381306).

Almost surely, 2^{20112220221020} is an apocalyptic number.

20112220221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112220221020 is an abundant number, since it is smaller than the sum of its proper divisors (22125964930324).

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

20112220221020 is a wasteful number, since it uses less digits than its factorization.

20112220221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60063989 (or 60063987 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20112220221020 its reverse (2012202221102), we get a palindrome (22124422442122).

The spelling of 20112220221020 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-one thousand, twenty".