20130020220 has 24 divisors (see below), whose sum is σ = 56364056784. Its totient is φ = 5368005376.

The previous prime is 20130020219. The next prime is 20130020293. The reversal of 20130020220 is 2202003102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20130020196 and 20130020205.

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, 167750109 + ... + 167750228.

It is an arithmetic number, because the mean of its divisors is an integer number (2348502366).

Almost surely, 2^20130020220 is an apocalyptic number.

20130020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130020220 is an abundant number, since it is smaller than the sum of its proper divisors (36234036564).

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

20130020220 is a wasteful number, since it uses less digits than its factorization.

20130020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335500349 (or 335500347 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20130020220 its reverse (2202003102), we get a palindrome (22332023322).

The spelling of 20130020220 in words is "twenty billion, one hundred thirty million, twenty thousand, two hundred twenty".