20301320220 has 48 divisors (see below), whose sum is σ = 56861481600. Its totient is φ = 5411991616.

The previous prime is 20301320197. The next prime is 20301320243. The reversal of 20301320220 is 2202310302.

It is an interprime number because it is at equal distance from previous prime (20301320197) and next prime (20301320243).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20301320220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146659 + ... + 249221.

It is an arithmetic number, because the mean of its divisors is an integer number (1184614200).

Almost surely, 2^20301320220 is an apocalyptic number.

20301320220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20301320220 is an abundant number, since it is smaller than the sum of its proper divisors (36560161380).

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

20301320220 is a wasteful number, since it uses less digits than its factorization.

20301320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105874 (or 105872 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20301320220 its reverse (2202310302), we get a palindrome (22503630522).

The spelling of 20301320220 in words is "twenty billion, three hundred one million, three hundred twenty thousand, two hundred twenty".