2243503021 has 2 divisors, whose sum is σ = 2243503022. Its totient is φ = 2243503020.

The previous prime is 2243502997. The next prime is 2243503069. The reversal of 2243503021 is 1203053422.

2243503021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2053449225 + 190053796 = 45315^2 + 13786^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243503021 - 2⁷ = 2243502893 is a prime.

It is a super-2 number, since 2×2243503021² = 10066611610472252882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2243502983 and 2243503001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243503081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121751510 + 1121751511.

It is an arithmetic number, because the mean of its divisors is an integer number (1121751511).

Almost surely, 2^2243503021 is an apocalyptic number.

It is an amenable number.

2243503021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243503021 is an equidigital number, since it uses as much as digits as its factorization.

2243503021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 2243503021 is about 47365.6312213825. The cubic root of 2243503021 is about 1309.1082291934.

Adding to 2243503021 its reverse (1203053422), we get a palindrome (3446556443).

The spelling of 2243503021 in words is "two billion, two hundred forty-three million, five hundred three thousand, twenty-one".