20013112220 has 24 divisors (see below), whose sum is σ = 42619475808. Its totient is φ = 7892494400.

The previous prime is 20013112201. The next prime is 20013112237. The reversal of 20013112220 is 2221131002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20013112195 and 20013112204.

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, 7045451 + ... + 7048290.

It is an arithmetic number, because the mean of its divisors is an integer number (1775811492).

Almost surely, 2^20013112220 is an apocalyptic number.

20013112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013112220 is an abundant number, since it is smaller than the sum of its proper divisors (22606363588).

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

20013112220 is a wasteful number, since it uses less digits than its factorization.

20013112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14093821 (or 14093819 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20013112220 its reverse (2221131002), we get a palindrome (22234243222).

The spelling of 20013112220 in words is "twenty billion, thirteen million, one hundred twelve thousand, two hundred twenty".