12310203220220 has 48 divisors (see below), whose sum is σ = 25946255038368. Its totient is φ = 4906020821760.

The previous prime is 12310203220219. The next prime is 12310203220243. The reversal of 12310203220220 is 2202230201321.

It is a happy number.

It is a super-2 number, since 2×12310203220220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12310203220192 and 12310203220201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113864990 + ... + 113973050.

It is an arithmetic number, because the mean of its divisors is an integer number (540546979966).

Almost surely, 2^{12310203220220} is an apocalyptic number.

12310203220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12310203220220 is an abundant number, since it is smaller than the sum of its proper divisors (13636051818148).

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

12310203220220 is a wasteful number, since it uses less digits than its factorization.

12310203220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128910 (or 128908 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12310203220220 its reverse (2202230201321), we get a palindrome (14512433421541).

The spelling of 12310203220220 in words is "twelve trillion, three hundred ten billion, two hundred three million, two hundred twenty thousand, two hundred twenty".