20012113220 has 48 divisors (see below), whose sum is σ = 45860689728. Its totient is φ = 7274789760.

The previous prime is 20012113157. The next prime is 20012113229. The reversal of 20012113220 is 2231121002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20012113195 and 20012113204.

It is not an unprimeable number, because it can be changed into a prime (20012113229) 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, 764387 + ... + 790133.

It is an arithmetic number, because the mean of its divisors is an integer number (955431036).

Almost surely, 2^20012113220 is an apocalyptic number.

20012113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012113220 is an abundant number, since it is smaller than the sum of its proper divisors (25848576508).

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

20012113220 is a wasteful number, since it uses less digits than its factorization.

20012113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29300 (or 29298 counting only the distinct ones).

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

Adding to 20012113220 its reverse (2231121002), we get a palindrome (22243234222).

The spelling of 20012113220 in words is "twenty billion, twelve million, one hundred thirteen thousand, two hundred twenty".