1241423221 has 2 divisors, whose sum is σ = 1241423222. Its totient is φ = 1241423220.

The previous prime is 1241423207. The next prime is 1241423233. The reversal of 1241423221 is 1223241421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1088010225 + 153412996 = 32985^2 + 12386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241423221 - 2¹³ = 1241415029 is a prime.

It is a super-2 number, since 2×1241423221² = 3082263227276029682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1241423192 and 1241423201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241423921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620711610 + 620711611.

It is an arithmetic number, because the mean of its divisors is an integer number (620711611).

Almost surely, 2^1241423221 is an apocalyptic number.

It is an amenable number.

1241423221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241423221 is an equidigital number, since it uses as much as digits as its factorization.

1241423221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 22.

The square root of 1241423221 is about 35233.8363082989. The cubic root of 1241423221 is about 1074.7479404706.

Adding to 1241423221 its reverse (1223241421), we get a palindrome (2464664642).

The spelling of 1241423221 in words is "one billion, two hundred forty-one million, four hundred twenty-three thousand, two hundred twenty-one".