2204250243421 has 2 divisors, whose sum is σ = 2204250243422. Its totient is φ = 2204250243420.

The previous prime is 2204250243401. The next prime is 2204250243431. The reversal of 2204250243421 is 1243420524022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1562465000196 + 641785243225 = 1249986^2 + 801115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2204250243421 - 2¹¹ = 2204250241373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2204250243401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102125121710 + 1102125121711.

It is an arithmetic number, because the mean of its divisors is an integer number (1102125121711).

Almost surely, 2^{2204250243421} is an apocalyptic number.

It is an amenable number.

2204250243421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2204250243421 is an equidigital number, since it uses as much as digits as its factorization.

2204250243421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 2204250243421 its reverse (1243420524022), we get a palindrome (3447670767443).

The spelling of 2204250243421 in words is "two trillion, two hundred four billion, two hundred fifty million, two hundred forty-three thousand, four hundred twenty-one".