2243401220 has 12 divisors (see below), whose sum is σ = 4711142604. Its totient is φ = 897360480.

The previous prime is 2243401189. The next prime is 2243401229. The reversal of 2243401220 is 221043422.

It can be written as a sum of positive squares in 2 ways, for example, as 1150702084 + 1092699136 = 33922^2 + 33056^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 112170061 = 2243401220 / (2 + 2 + 4 + 3 + 4 + 0 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 2243401192 and 2243401201.

It is not an unprimeable number, because it can be changed into a prime (2243401229) 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, 56085011 + ... + 56085050.

It is an arithmetic number, because the mean of its divisors is an integer number (392595217).

Almost surely, 2^2243401220 is an apocalyptic number.

2243401220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2243401220 is an abundant number, since it is smaller than the sum of its proper divisors (2467741384).

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

2243401220 is a wasteful number, since it uses less digits than its factorization.

2243401220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112170070 (or 112170068 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2243401220 is about 47364.5565797886. The cubic root of 2243401220 is about 1309.0884282331.

Adding to 2243401220 its reverse (221043422), we get a palindrome (2464444642).

The spelling of 2243401220 in words is "two billion, two hundred forty-three million, four hundred one thousand, two hundred twenty".