1223050421 has 2 divisors, whose sum is σ = 1223050422. Its totient is φ = 1223050420.

The previous prime is 1223050417. The next prime is 1223050469. The reversal of 1223050421 is 1240503221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1217242321 + 5808100 = 34889^2 + 2410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223050421 - 2² = 1223050417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223050393 and 1223050402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223050021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611525210 + 611525211.

It is an arithmetic number, because the mean of its divisors is an integer number (611525211).

Almost surely, 2^1223050421 is an apocalyptic number.

It is an amenable number.

1223050421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223050421 is an equidigital number, since it uses as much as digits as its factorization.

1223050421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1223050421 is about 34972.1377813825. The cubic root of 1223050421 is about 1069.4195532907.

Adding to 1223050421 its reverse (1240503221), we get a palindrome (2463553642).

The spelling of 1223050421 in words is "one billion, two hundred twenty-three million, fifty thousand, four hundred twenty-one".