2242552421 has 2 divisors, whose sum is σ = 2242552422. Its totient is φ = 2242552420.

The previous prime is 2242552393. The next prime is 2242552471. The reversal of 2242552421 is 1242552422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2136750625 + 105801796 = 46225^2 + 10286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2242552421 is a prime.

It is a super-2 number, since 2×2242552421² = 10058082721865922482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2242552471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121276210 + 1121276211.

It is an arithmetic number, because the mean of its divisors is an integer number (1121276211).

Almost surely, 2^2242552421 is an apocalyptic number.

It is an amenable number.

2242552421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2242552421 is an equidigital number, since it uses as much as digits as its factorization.

2242552421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12800, while the sum is 29.

The square root of 2242552421 is about 47355.5954560810. The cubic root of 2242552421 is about 1308.9233079529.

Subtracting from 2242552421 its reverse (1242552422), we obtain a palindrome (999999999).

The spelling of 2242552421 in words is "two billion, two hundred forty-two million, five hundred fifty-two thousand, four hundred twenty-one".