2123301220 has 12 divisors (see below), whose sum is σ = 4458932604. Its totient is φ = 849320480.

The previous prime is 2123301217. The next prime is 2123301223. The reversal of 2123301220 is 221033212.

It is an interprime number because it is at equal distance from previous prime (2123301217) and next prime (2123301223).

It can be written as a sum of positive squares in 2 ways, for example, as 419758144 + 1703543076 = 20488^2 + 41274^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2123301194 and 2123301203.

It is not an unprimeable number, because it can be changed into a prime (2123301223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53082511 + ... + 53082550.

It is an arithmetic number, because the mean of its divisors is an integer number (371577717).

Almost surely, 2^2123301220 is an apocalyptic number.

2123301220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123301220 is an abundant number, since it is smaller than the sum of its proper divisors (2335631384).

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

2123301220 is a wasteful number, since it uses less digits than its factorization.

2123301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106165070 (or 106165068 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2123301220 is about 46079.2927463085. The cubic root of 2123301220 is about 1285.2981124873.

Adding to 2123301220 its reverse (221033212), we get a palindrome (2344334432).

The spelling of 2123301220 in words is "two billion, one hundred twenty-three million, three hundred one thousand, two hundred twenty".